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Khan Academy - Physics 1-48

Choosing kinematic equations
Choosing kinematic equationsHow to set up problems with constant acceleration and choose the best kinematic equation to solve for the target unknown.Physics on Khan Academy: Physics is the study of the basic principles that govern the physical…
- 24 Oct 16, 4:37pm -
Viewing g as the value of Earth's gravitational field near the surface | Khan Academy
Viewing g as the value of Earth's gravitational field near the surface | Khan AcademyViewing g as the value of Earth's gravitational field near the surface rather than the acceleration due to gravity near Earth's surface for an object in freefall…
- 28 Nov 11, 4:29pm -
Loop de loop answer part 2 | Centripetal force and gravitation | Physics | Khan Academy
Loop de loop answer part 2 | Centripetal force and gravitation | Physics | Khan AcademyFiguring out the car's average speed while completing the loop de loop. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physic…
- 23 Nov 11, 8:29pm -
Loop de loop answer part 1 | Centripetal force and gravitation | Physics | Khan Academy
Loop de loop answer part 1 | Centripetal force and gravitation | Physics | Khan AcademyFiguring out the minimum speed at the top of the loop de loop to stay on the track. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/sc…
- 23 Nov 11, 8:29pm -
Loop de loop question | Centripetal force and gravitation | Physics | Khan Academy
Loop de loop question | Centripetal force and gravitation | Physics | Khan AcademyAsks students to find the minimum speed necessary to complete the loop de loop. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/phy…
- 23 Nov 11, 8:28pm -
Space station speed in orbit | Centripetal force and gravitation | Physics | Khan Academy
Space station speed in orbit | Centripetal force and gravitation | Physics | Khan AcademySpeed necessary for the space station to stay in orbit. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-…
- 23 Nov 11, 8:27pm -
Acceleration due to gravity at the space station | Physics | Khan Academy
Acceleration due to gravity at the space station | Physics | Khan AcademyWhat is the acceleration due to gravity at the space station. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and-…
- 23 Nov 11, 8:26pm -
Calculus proof of centripetal acceleration formula | Physics | Khan Academy
Calculus proof of centripetal acceleration formula | Physics | Khan AcademyProving that a = v^2/r. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and-gravitation/centripetal-acceleration…
- 22 Nov 11, 7:49pm -
Relationship between angular velocity and speed | Physics | Khan Academy
Relationship between angular velocity and speed | Physics | Khan AcademyHow angular velocity relates to speed. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/torque-angular-momentum/rotational-kinematics/…
- 22 Nov 11, 7:48pm -
Visual understanding of centripetal acceleration formula | Physics | Khan Academy
Visual understanding of centripetal acceleration formula | Physics | Khan AcademyVisual understanding of how centripetal acceleration relates to velocity and radius. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science…
- 22 Nov 11, 5:53pm -
Centripetal force and acceleration intuition | Physics | Khan Academy
Centripetal force and acceleration intuition | Physics | Khan AcademyThe direction of the force in cases of circular motion at constant speeds. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-f…
- 22 Nov 11, 4:39pm -
Static and kinetic friction example | Forces and Newton's laws of motion | Physics | Khan Academy
Static and kinetic friction example | Forces and Newton's laws of motion | Physics | Khan AcademyThinking about the coefficients of static and kinetic friction. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/phys…
- 20 Jun 11, 7:21pm -
Intuition on static and kinetic friction comparisons | Physics | Khan Academy
Intuition on static and kinetic friction comparisons | Physics | Khan AcademyWhy static friction is harder to overcome than kinetic friction. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-newtons-…
- 20 Jun 11, 6:58pm -
Force of friction keeping velocity constant | Physics | Khan Academy
Force of friction keeping velocity constant | Physics | Khan AcademyCalculating the coefficient of kinetic friction (correction made in next video). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-n…
- 20 Jun 11, 5:59pm -
Correction to force of friction keeping the block stationary | Physics | Khan Academy
Correction to force of friction keeping the block stationary | Physics | Khan AcademyCorrection to Force of Friction Keeping the Block Stationary. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-new…
- 20 Jun 11, 5:57pm -
Force of friction keeping the block stationary | Physics | Khan Academy
Force of friction keeping the block stationary | Physics | Khan AcademyBlock of wood kept stationary by the force of friction (Correction made in next video). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physic…
- 20 Jun 11, 5:22pm -
Ice accelerating down an incline | Forces and Newton's laws of motion | Physics | Khan Academy
Ice accelerating down an incline | Forces and Newton's laws of motion | Physics | Khan AcademyFiguring out the acceleration of ice down a plane made of ice. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/…
- 20 Jun 11, 4:38pm -
Inclined plane force components | Forces and Newton's laws of motion | Physics | Khan Academy
Inclined plane force components | Forces and Newton's laws of motion | Physics | Khan AcademyFiguring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane. Created by Sal Khan.Wa…
- 20 Jun 11, 3:02pm -
Normal force in an elevator | Forces and Newton's laws of motion | Physics | Khan Academy
Normal force in an elevator | Forces and Newton's laws of motion | Physics | Khan AcademyHow the normal force changes when an elevator accelerates. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-ne…
- 20 Jun 11, 2:24pm -
Normal force and contact force | Forces and Newton's laws of motion | Physics | Khan Academy
Normal force and contact force | Forces and Newton's laws of motion | Physics | Khan AcademyThe force that keeps a block of ice from falling towards the center of the earth. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org…
- 18 Jun 11, 10:25pm -
Unit vectors and engineering notation | Two-dimensional motion | Physics | Khan Academy
Unit vectors and engineering notation | Two-dimensional motion | Physics | Khan AcademyUsing unit vectors to represent the components of a vector. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimens…
- 17 Jun 11, 6:00pm -
Correction to total final velocity for projectile | Physics | Khan Academy
Correction to total final velocity for projectile | Physics | Khan AcademyCorrection to "Total Final Velocity for Projectile" Video. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimensional-motion/t…
- 16 Jun 11, 7:35pm -
Projectile on an incline | Two-dimensional motion | Physics | Khan Academy
Projectile on an incline | Two-dimensional motion | Physics | Khan AcademyChallenging problem of a projectile on an inclined plane. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimensional-motion/tw…
- 16 Jun 11, 7:23pm -
Total final velocity for projectile | Two-dimensional motion | Physics | Khan Academy
Total final velocity for projectile | Two-dimensional motion | Physics | Khan AcademyCalculating the total final velocity for a projectile landing at a different altitude (mistake near end: I write 29.03 when it should be 26.03 m/s and the final…
- 16 Jun 11, 6:17pm -
Total displacement for projectile | Two-dimensional motion | Physics | Khan Academy
Total displacement for projectile | Two-dimensional motion | Physics | Khan AcademyReconstructing the total displacement vector for a projectile. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimensi…
- 16 Jun 11, 6:16pm -
Launching and landing on different elevations | Two-dimensional motion | Physics | Khan Academy
Launching and landing on different elevations | Two-dimensional motion | Physics | Khan AcademyMore complicated example involving launching and landing at different elevations. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.…
- 16 Jun 11, 4:58pm -
Different way to determine time in air | Two-dimensional motion | Physics | Khan Academy
Different way to determine time in air | Two-dimensional motion | Physics | Khan AcademyAnother way to determine time in the air given an initial vertical velocity. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/…
- 16 Jun 11, 4:32pm -
Projectile at an angle | Two-dimensional motion | Physics | Khan Academy
Projectile at an angle | Two-dimensional motion | Physics | Khan AcademyFiguring out the horizontal displacement for a projectile launched at an angle. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-d…
- 16 Jun 11, 4:08pm -
Visualizing vectors in 2 dimensions | Two-dimensional motion | Physics | Khan Academy
Visualizing vectors in 2 dimensions | Two-dimensional motion | Physics | Khan AcademyVisualizing, adding and breaking down vectors in 2 dimensions. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimen…
- 16 Jun 11, 2:59pm -
Impact velocity from given height | One-dimensional motion | Physics | Khan Academy
Impact velocity from given height | One-dimensional motion | Physics | Khan AcademyDetermining how fast something will be traveling upon impact when it is released from a given height. Created by Sal Khan.Watch the next lesson: https://www.khan…
- 15 Jun 11, 9:34pm -
Deriving max projectile displacement given time | Physics | Khan Academy
Deriving max projectile displacement given time | Physics | Khan AcademyDeriving a formula for maximum projectile displacement as a function of elapsed time. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics…
- 15 Jun 11, 6:00pm -
Projectile height given time | One-dimensional motion | Physics | Khan Academy
Projectile height given time | One-dimensional motion | Physics | Khan AcademyFiguring out how high a ball gets given how long it spends in the air. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dime…
- 15 Jun 11, 5:44pm -
Plotting projectile displacement, acceleration, and velocity | Khan Academy
Plotting projectile displacement, acceleration, and velocity | Khan AcademyPlotting projectile displacement, acceleration, and velocity as a function to change in time. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/scie…
- 15 Jun 11, 4:07pm -
Deriving displacement as a function of time, acceleration, and initial velocity | Khan Academy
Deriving displacement as a function of time, acceleration, and initial velocity | Khan AcademyDeriving displacement as a function of time, constant acceleration and initial velocity. Created by Sal Khan.Watch the next lesson: https://www.khanac…
- 15 Jun 11, 3:42pm -
Would a brick or feather fall faster? | Physics | Khan Academy
Would a brick or feather fall faster? | Physics | Khan AcademyWhat would fall faster on the moon? Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and-gravitation/gravity-newtonian/v/accel…
- 14 Jun 11, 9:54pm -
Mass and weight clarification | Centripetal force and gravitation | Physics | Khan Academy
Mass and weight clarification | Centripetal force and gravitation | Physics | Khan AcademyDifference between mass and weight. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and-gravitati…
- 14 Jun 11, 5:40pm -
Newton's third law of motion | Forces and Newton's laws of motion | Physics | Khan Academy
Newton's third law of motion | Forces and Newton's laws of motion | Physics | Khan AcademyEvery action has an equal and opposite reaction. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-newtons-law…
- 14 Jun 11, 5:10pm -
Newton's second law of motion | Forces and Newton's laws of motion | Physics | Khan Academy
Newton's second law of motion | Forces and Newton's laws of motion | Physics | Khan AcademyNewton's Second Law of Motion: F=ma. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-newtons-laws/newtons-l…
- 14 Jun 11, 4:10pm -
More on Newton's first law of motion | Physics | Khan Academy
More on Newton's first law of motion | Physics | Khan AcademyNewton's First Law (Galileo's Law of Inertia). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-newtons-laws/newtons-laws-of-motion/v/newt…
- 13 Jun 11, 11:54pm -
Acceleration of aircraft carrier take-off | One-dimensional motion | Physics | Khan Academy
Acceleration of aircraft carrier take-off | One-dimensional motion | Physics | Khan AcademyUsing what we know about take-off velocity and runway length to determine acceleration. Created by Sal Khan.Watch the next lesson: https://www.khanacadem…
- 13 Jun 11, 9:23pm -
Airbus A380 take-off distance | One-dimensional motion | Physics | Khan Academy
Airbus A380 take-off distance | One-dimensional motion | Physics | Khan AcademyHow long of a runway does an A380 need? Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dimensional-motion/acceleration-tu…
- 13 Jun 11, 7:24pm -
Average velocity for constant acceleration | One-dimensional motion | Physics | Khan Academy
Average velocity for constant acceleration | One-dimensional motion | Physics | Khan AcademyCalculating average velocity when acceleration is constant. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-d…
- 13 Jun 11, 7:02pm -
Why distance is area under velocity-time line | Physics | Khan Academy
Why distance is area under velocity-time line | Physics | Khan AcademyHow long of a runway does an A380 need? Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dimensional-motion/acceleration-tutorial/v/…
- 13 Jun 11, 6:12pm -
Airbus A380 take-off time | One-dimensional motion | Physics | Khan Academy
Airbus A380 take-off time | One-dimensional motion | Physics | Khan AcademyFiguring how long it takes an a380 to take off given a constant acceleration. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-…
- 13 Jun 11, 5:30pm -
Race cars with constant speed around curve | Physics | Khan Academy
Race cars with constant speed around curve | Physics | Khan AcademyWhen acceleration could involve a change in direction and not speed. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and…
- 13 Jun 11, 3:52pm -
Acceleration | One-dimensional motion | Physics | Khan Academy
Acceleration | One-dimensional motion | Physics | Khan AcademyCalculating the acceleration of a Porsche. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dimensional-motion/acceleration-tutorial/v/airbu…
- 13 Jun 11, 3:20pm -
Gravity for astronauts in orbit | Centripetal force and gravitation | Physics | Khan Academy
Gravity for astronauts in orbit | Centripetal force and gravitation | Physics | Khan AcademyWhy do astronauts appear weightless despite being near the Earth? Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics…
- 12 Jun 11, 10:48pm -
Introduction to gravity | Centripetal force and gravitation | Physics | Khan Academy
Introduction to gravity | Centripetal force and gravitation | Physics | Khan AcademyBasics of gravity and the Law of Universal Gravitation. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force…
- 11 Jun 11, 11:07pm -

Khan Academy - Physics 49-97

Displacement from time and velocity example | One-dimensional motion | Physics | Khan Academy
Displacement from time and velocity example | One-dimensional motion | Physics | Khan AcademyWorked example of calculating displacement from time and velocity. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physi…
- 11 Jun 11, 9:48pm -
Solving for time | One-dimensional motion | Physics | Khan Academy
Solving for time | One-dimensional motion | Physics | Khan AcademySimple example of solving for time given distance and rate. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dimensional-motion/displace…
- 11 Jun 11, 9:35pm -
Calculating average velocity or speed | One-dimensional motion | Physics | Khan Academy
Calculating average velocity or speed | One-dimensional motion | Physics | Khan AcademyExample of calculating speed and velocity. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/one-dimensional-motion/disp…
- 11 Jun 11, 9:12pm -
Intro to vectors & scalars | One-dimensional motion | Physics | Khan Academy
Intro to vectors & scalars | One-dimensional motion | Physics | Khan AcademyDistance, displacement, speed and velocity. Difference between vectors and scalars. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physi…
- 11 Jun 11, 8:27pm -
Object image height and distance relationship | Geometric optics | Physics | Khan Academy
Object image height and distance relationship | Geometric optics | Physics | Khan AcademyObject Image Height and Distance Relationship. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirr…
- 10 Dec 10, 10:34pm -
Object image and focal distance relationship (proof of formula) | Physics | Khan Academy
Object image and focal distance relationship (proof of formula) | Physics | Khan AcademyObject Image and Focal Distance Relationship (Proof of Formula). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geom…
- 10 Dec 10, 10:02pm -
Concave lenses | Geometric optics | Physics | Khan Academy
Concave lenses | Geometric optics | Physics | Khan AcademyConcave Lenses. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/object-image-and-focal-distance-relationship-…
- 10 Dec 10, 6:07pm -
Convex lens examples | Geometric optics | Physics | Khan Academy
Convex lens examples | Geometric optics | Physics | Khan AcademyConvex Lens Examples. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/concave-lenses?utm_source=YT&utm_…
- 10 Dec 10, 5:49pm -
Convex lenses | Geometric optics | Physics | Khan Academy
Convex lenses | Geometric optics | Physics | Khan AcademyConvex Lenses. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/convex-lens-examples?utm_source=YT&utm_medium=D…
- 9 Dec 10, 10:37pm -
Convex parabolic mirrors | Geometric optics | Physics | Khan Academy
Convex parabolic mirrors | Geometric optics | Physics | Khan AcademyConvex Parabolic Mirrors. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/convex-lenses?utm_source=…
- 9 Dec 10, 9:53pm -
Parabolic mirrors 2 | Geometric optics | Physics | Khan Academy
Parabolic mirrors 2 | Geometric optics | Physics | Khan AcademyParabolic Mirrors 2. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/convex-parabolic-mirrors?utm_source…
- 9 Dec 10, 9:09pm -
Parabolic mirrors and real images | Geometric optics | Physics | Khan Academy
Parabolic mirrors and real images | Geometric optics | Physics | Khan AcademyParabolic Mirrors and Real Images. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/parabol…
- 9 Dec 10, 8:32pm -
Virtual image | Geometric optics | Physics | Khan Academy
Virtual image | Geometric optics | Physics | Khan AcademyVirtual Image. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/parabolic-mirrors-and-real-images?utm_source=YT…
- 9 Dec 10, 5:15pm -
Total internal reflection | Geometric optics | Physics | Khan Academy
Total internal reflection | Geometric optics | Physics | Khan AcademyCritical incident angle and total internal reflection. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refra…
- 9 Dec 10, 4:31pm -
Snell's law example 2 | Geometric optics | Physics | Khan Academy
Snell's law example 2 | Geometric optics | Physics | Khan AcademySnell's Law Example 2. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/total-internal-reflection?ut…
- 9 Dec 10, 1:01am -
Snell's law example 1 | Geometric optics | Physics | Khan Academy
Snell's law example 1 | Geometric optics | Physics | Khan AcademySnell's Law Example 1. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/snell-s-law-example-2?utm_so…
- 9 Dec 10, 12:39am -
Refraction in water | Geometric optics | Physics | Khan Academy
Refraction in water | Geometric optics | Physics | Khan AcademyRefraction in Water. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/snell-s-law-examples-1?utm_sourc…
- 8 Dec 10, 11:28pm -
Refraction and Snell's law | Geometric optics | Physics | Khan Academy
Refraction and Snell's law | Geometric optics | Physics | Khan AcademyRefraction and Snell's Law. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/refraction-in-wate…
- 8 Dec 10, 11:09pm -
Specular and diffuse reflection 2 | Geometric optics | Physics | Khan Academy
Specular and diffuse reflection 2 | Geometric optics | Physics | Khan AcademySpecular and Diffuse Reflection 2. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/refr…
- 8 Dec 10, 7:48pm -
Specular and diffuse reflection | Geometric optics | Physics | Khan Academy
Specular and diffuse reflection | Geometric optics | Physics | Khan AcademySpecular and Diffuse Reflection. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/reflection-refraction/v/specular…
- 8 Dec 10, 5:01pm -
Optimal angle for a projectile part 1: Components of initial velocity | Khan Academy
Optimal angle for a projectile part 1: Components of initial velocity | Khan AcademyYou want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity. Created by Sal Khan.Wa…
- 30 Jul 10, 6:50pm -
Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculus
Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculusCreated by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/forces-newtons-laws/newtons-laws-of-motion/v/newton-s-1st…
- 30 Jul 10, 6:50pm -
Optimal angle for a projectile part 2: Hangtime | Physics | Khan Academy
Optimal angle for a projectile part 2: Hangtime | Physics | Khan AcademyNow it's time to think about hangtime for our far-flung projectile. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimensional-m…
- 30 Jul 10, 12:38am -
Optimal angle for a projectile part 3: Horizontal distance as a function of angle (and speed)
Optimal angle for a projectile part 3: Horizontal distance as a function of angle (and speed)In this video, we'll finish writing the formula for distance as a function of the angle. Created by Sal Khan.Watch the next lesson: https://www.khanaca…
- 30 Jul 10, 12:37am -
Mach numbers | Mechanical waves and sound | Physics | Khan Academy
Mach numbers | Mechanical waves and sound | Physics | Khan AcademyWe can measure speeds relative to the speed of sound. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/sound-topi…
- 7 Jun 10, 4:56pm -
When the source and the wave move at the same velocity | Physics | Khan Academy
When the source and the wave move at the same velocity | Physics | Khan AcademyWhat happens when both the listener and the source are moving together? Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechan…
- 6 Jun 10, 10:14pm -
Doppler effect formula when source is moving away | Physics | Khan Academy
Doppler effect formula when source is moving away | Physics | Khan AcademyLet's look at the case where the source is moving away from the listener. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechanica…
- 5 Jun 10, 9:39pm -
Doppler effect formula for observed frequency | Physics | Khan Academy
Doppler effect formula for observed frequency | Physics | Khan AcademyLet's derive the formula for how the perceived frequency of a sound changes when its source is moving toward you. Created by Sal Khan.Watch the next lesson: https://www.khana…
- 5 Jun 10, 8:53pm -
Introduction to the doppler effect | Mechanical waves and sound | Physics | Khan Academy
Introduction to the doppler effect | Mechanical waves and sound | Physics | Khan AcademyIntroduction to the Doppler Effect. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/dopple…
- 3 Jun 10, 10:16pm -
Amplitude, period, frequency and wavelength of periodic waves | Physics | Khan Academy
Amplitude, period, frequency and wavelength of periodic waves | Physics | Khan AcademyAmplitude, period, frequency and wavelength of periodic waves. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechanic…
- 16 Mar 10, 7:49pm -
Introduction to waves | Mechanical waves and sound | Physics | Khan Academy
Introduction to waves | Mechanical waves and sound | Physics | Khan AcademyIntroduction to transverse and longitudinal waves. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mech…
- 15 Mar 10, 8:35pm -
Electrostatics (part 1): Introduction to Charge and Coulomb's Law
Electrostatics (part 1): Introduction to Charge and Coulomb's LawIntroduction to Charge and Coulomb's Law (video from May 2008 that I forgot to upload)More free lessons at: http://www.khanacademy.org/video?v=NXMgvrS8Gr8From:Khan AcademyViews:…
- 23 Jan 10, 8:32pm -
Introduction to magnetism | Physics | Khan Academy
Introduction to magnetism | Physics | Khan AcademyAn introduction to magnetism. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnets-magnetic/v/magnetism-2?utm_source…
- 11 Sep 08, 11:15pm -
Calculating dot and cross products with unit vector notation | Physics | Khan Academy
Calculating dot and cross products with unit vector notation | Physics | Khan AcademyCalculating the dot and cross products when vectors are presented in their x, y, and z (or i,j, and k) components. Created by Sal Khan.Watch the next lesson: h…
- 9 Aug 08, 6:01am -
Dot vs. cross product | Physics | Khan Academy
Dot vs. cross product | Physics | Khan AcademyUnderstanding the differences between the dot and cross products. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/electric-…
- 9 Aug 08, 3:04am -
The dot product | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan Academy
The dot product | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan AcademyIntroduction to the vector dot product. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-mag…
- 9 Aug 08, 2:35am -
Induced current in a wire | Physics | Khan Academy
Induced current in a wire | Physics | Khan AcademySal determines the current and EMF induced in a wire pulled through a magnetic field. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-m…
- 4 Aug 08, 5:02am -
Electric motors (part 3) | Physics | Khan Academy
Electric motors (part 3) | Physics | Khan AcademySal finishes the explanation of how a commutator will allow a loop of wire to continue spinning in a magnetic field, thereby allowing it to work as an electric motor. Created by Sal Khan.Watch th…
- 3 Aug 08, 11:39pm -
Electric motors (part 1) | Physics | Khan Academy
Electric motors (part 1) | Physics | Khan AcademySal shows that there will be a net torque on a loop of current in a wire. Sal shows that this net torque will cause the loop to rotate. Created by Sal Khan.Watch the next lesson: https://www.khan…
- 3 Aug 08, 11:39pm -
Electric motors (part 2) | Physics | Khan Academy
Electric motors (part 2) | Physics | Khan AcademySal shows that a commutator can be used in order to keep the loop of wire rotating in the magnetic field. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/ma…
- 3 Aug 08, 11:39pm -
Magnetic force between two currents going in opposite directions | Khan Academy
Magnetic force between two currents going in opposite directions | Khan AcademySal shows how to determine the magnetic force between two currents going in opposite directions. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.o…
- 2 Aug 08, 6:36pm -
Magnetic force between two currents going in the same direction | Khan Academy
Magnetic force between two currents going in the same direction | Khan AcademySal shows how to determine the magnetic force between two currents going in the same direction. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org…
- 2 Aug 08, 6:36pm -
Magnetic field created by a current carrying wire | Physics | Khan Academy
Magnetic field created by a current carrying wire | Physics | Khan AcademySee how a wire carrying a current creates a magnetic field. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-mag…
- 2 Aug 08, 1:38am -
Magnetic force on a current carrying wire | Physics | Khan Academy
Magnetic force on a current carrying wire | Physics | Khan AcademySal derives the formula F=ILB to determine the force on a current carrying wire. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-f…
- 1 Aug 08, 2:55am -
Magnetic force on a charge | Physics | Khan Academy
Magnetic force on a charge | Physics | Khan AcademySal shows how to find the size and direction of the magnetic force using F=qvB and the right hand rule. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/ma…
- 31 Jul 08, 2:58am -
Magnetic force on a proton example (part 1) | Physics | Khan Academy
Magnetic force on a proton example (part 1) | Physics | Khan AcademySal does an example problem to determine the size and direction of the magnetic force on a proton moving through a magnetic field. Created by Sal Khan.Watch the next lesson: ht…
- 31 Jul 08, 2:58am -
Magnetic force on a proton example (part 2) | Physics | Khan Academy
Magnetic force on a proton example (part 2) | Physics | Khan AcademySal determines the radius of the circle traveled by the proton in the previous example by using the formula for centripetal acceleration. Created by Sal Khan.Watch the next les…
- 31 Jul 08, 2:58am -
Cross product and torque | Moments, torque, and angular momentum | Physics | Khan Academy
Cross product and torque | Moments, torque, and angular momentum | Physics | Khan AcademyThe cross product and the direction of torque. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/oscillatory-motion/ha…
- 30 Jul 08, 3:33am -

Khan Academy - Physics 98-146

Cross product 1 | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan Academy
Cross product 1 | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan AcademyIntroduction to the cross product. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic…
- 30 Jul 08, 3:33am -
Example: Analyzing a more complex resistor circuit | Physics | Khan Academy
Example: Analyzing a more complex resistor circuit | Physics | Khan AcademyA hairy resistance problem. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/analyzing-a-resis…
- 24 May 08, 9:27pm -
Resistors in parallel | Circuits | Physics | Khan Academy
Resistors in parallel | Circuits | Physics | Khan AcademyResistors that run alongside each other. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-4?utm_so…
- 24 May 08, 9:04pm -
Resistors in series | Circuits | Physics | Khan Academy
Resistors in series | Circuits | Physics | Khan AcademyResistors that come one after another. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-3?utm_source…
- 24 May 08, 8:40pm -
Introduction to circuits and Ohm's law | Circuits | Physics | Khan Academy
Introduction to circuits and Ohm's law | Circuits | Physics | Khan AcademyIntroduction to electricity, circuits, current, and resistance. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circ…
- 24 May 08, 8:36pm -
Moments (part 2) | Moments, torque, and angular momentum | Physics | Khan Academy
Moments (part 2) | Moments, torque, and angular momentum | Physics | Khan Academy2 more moment problems. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/torque-angular-momentum/torque-tutorial/v/finding-to…
- 23 May 08, 8:59pm -
Moments | Moments, torque, and angular momentum | Physics | Khan Academy
Moments | Moments, torque, and angular momentum | Physics | Khan AcademyIntroduction to moments. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/torque-angular-momentum/torque-tutorial/v/moments-part-2?utm…
- 23 May 08, 8:52pm -
Capacitance | Circuits | Physics | Khan Academy
Capacitance | Circuits | Physics | Khan AcademyIntroduction to the capacitance of a two place capacitor. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-with-capacitors/v/energy-cap…
- 23 May 08, 7:53pm -
Voltage | Electric charge, electric force, and voltage | Physics | Khan Academy
Voltage | Electric charge, electric force, and voltage | Physics | Khan AcademySal explains the difference between electrical potential (voltage) and electrical potential energy. Created by Sal Khan.Watch the next lesson: https://www.khanacadem…
- 23 May 08, 6:16pm -
Electric potential energy (part 2-- involves calculus) | Physics | Khan Academy
Electric potential energy (part 2-- involves calculus) | Physics | Khan AcademyElectric potential energy difference in a varying field. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/electric-charge-elect…
- 23 May 08, 4:58pm -
Electric potential energy | Electrostatics | Electrical engineering | Khan Academy
Electric potential energy | Electrostatics | Electrical engineering | Khan AcademyIntroduction to electric potential energy. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/electrical-engineering/robots/all-about-…
- 23 May 08, 1:00am -
Proof: Field from infinite plate (part 2) | Electrostatics | Electrical engineering | Khan Academy
Proof: Field from infinite plate (part 2) | Electrostatics | Electrical engineering | Khan AcademyWe see that the infinite, uniformly charged plate generates a constant electric field (independent of the height above the plate). Created by Sal Kh…
- 14 May 08, 12:19am -
Proof: Field from infinite plate (part 1) | Electrostatics | Electrical engineering | Khan Academy
Proof: Field from infinite plate (part 1) | Electrostatics | Electrical engineering | Khan AcademyAdvanced proof of the formula for the electric field generated by a uniformly charged, infinite plate. Created by Sal Khan.Watch the next lesson:…
- 14 May 08, 12:17am -
Electric field | Electric charge, electric force, and voltage | Physics | Khan Academy
Electric field | Electric charge, electric force, and voltage | Physics | Khan AcademyWe can think of the forces between charges as something that comes from a property of space. That property is called the electric field. Created by Sal Khan.W…
- 13 May 08, 11:19pm -
Thermodynamics part 5: Molar ideal gas law problem | Physics | Khan Academy
Thermodynamics part 5: Molar ideal gas law problem | Physics | Khan AcademySal uses the molar version of the ideal gas law to solve for the number of moles in a gas. He also shows how to convert this answer into number of molecules using Avogadro…
- 26 Apr 08, 6:33pm -
Thermodynamics part 4: Moles and the ideal gas law | Physics | Khan Academy
Thermodynamics part 4: Moles and the ideal gas law | Physics | Khan AcademySal explains the concept of a mole. Then he derives the molar version of the ideal gas law PV=nRT, where the gas constant R=8.31 J/molK. Created by Sal Khan.Watch the ne…
- 26 Apr 08, 6:33pm -
Thermodynamics part 3: Kelvin scale and Ideal gas law example | Physics | Khan Academy
Thermodynamics part 3: Kelvin scale and Ideal gas law example | Physics | Khan AcademySal makes the case for the Kelvin scale of temperature and absolute zero by showing that temperature is proportional to kinetic energy. Then he explains that yo…
- 26 Apr 08, 6:32pm -
Thermodynamics part 2: Ideal gas law | Thermodynamics | Physics | Khan Academy
Thermodynamics part 2: Ideal gas law | Thermodynamics | Physics | Khan AcademyIntuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. Created…
- 26 Apr 08, 6:32pm -
Thermodynamics part 1: Molecular theory of gases | Physics | Khan Academy
Thermodynamics part 1: Molecular theory of gases | Physics | Khan AcademyIntuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. Created by S…
- 26 Apr 08, 6:32pm -
Bernoulli's example problem | Fluids | Physics | Khan Academy
Bernoulli's example problem | Fluids | Physics | Khan AcademySal solves a Bernoulli's equation example problem where fluid is moving through a pipe of varying diameter. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/scie…
- 20 Apr 08, 5:57am -
Bernoulli's equation (part 4) | Fluids | Physics | Khan Academy
Bernoulli's equation (part 4) | Fluids | Physics | Khan AcademyClarification of, and more thoughts on, the Bernoulli's equation example problem where liquid exits a hole in a container. Created by Sal Khan.Watch the next lesson: https://www.kha…
- 20 Apr 08, 5:57am -
Bernoulli's equation (part 3) | Fluids | Physics | Khan Academy
Bernoulli's equation (part 3) | Fluids | Physics | Khan AcademySal finishes the example problem where liquid exits a hole in a container. . Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/fluids/fluid-dyna…
- 20 Apr 08, 5:57am -
Bernoulli's equation (part 2) | Fluids | Physics | Khan Academy
Bernoulli's equation (part 2) | Fluids | Physics | Khan AcademyThis is the second of two videos where Sal derives Bernoulli's equation. In the second half of the video Sal also begins an example problem where liquid exits a hole in a container. C…
- 20 Apr 08, 5:57am -
Bernoulli's equation (part 1) | Fluids | Physics | Khan Academy
Bernoulli's equation (part 1) | Fluids | Physics | Khan AcademyThis is the first of two videos where Sal derives Bernoulli's equation. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/fluids/fluid-dynamics/…
- 20 Apr 08, 5:57am -
Volume flow rate and equation of continuity | Fluids | Physics | Khan Academy
Volume flow rate and equation of continuity | Fluids | Physics | Khan AcademySal introduces the notion of moving fluids and laminar flow. Then he uses the incompressibility of a liquid to show that the volume flow rate (flux) must remain constant…
- 20 Apr 08, 5:57am -
Buoyant force example problems | Fluids | Physics | Khan Academy
Buoyant force example problems | Fluids | Physics | Khan AcademyA couple of problems involving Archimedes' principle and buoyant forces. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/fluids/fluid-dynamic…
- 20 Apr 08, 1:22am -
Archimedes principle and buoyant force | Fluids | Physics | Khan Academy
Archimedes principle and buoyant force | Fluids | Physics | Khan AcademyIntroduction to Archimedes' principle and buoyant force. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/fluids/buoyant-force-and-arc…
- 20 Apr 08, 12:46am -
Finding height of fluid in a barometer | Fluids | Physics | Khan Academy
Finding height of fluid in a barometer | Fluids | Physics | Khan AcademyUsing our understanding of fluid pressure to figure out the height of a column of mercury. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/ph…
- 19 Apr 08, 11:16pm -
Pressure at a depth in a fluid | Fluids | Physics | Khan Academy
Pressure at a depth in a fluid | Fluids | Physics | Khan AcademySal finishes the calculation or work to determine the mechanical advantage in a U-shaped tube. He also explains pressure and Pascal's Principal. Created by Sal Khan.Watch the next…
- 19 Apr 08, 11:16pm -
Pressure and Pascal's principle (part 2) | Fluids | Physics | Khan Academy
Pressure and Pascal's principle (part 2) | Fluids | Physics | Khan AcademySal finishes the calculation or work to determine the mechanical advantage in a U-shaped tube. He also explains pressure and Pascal's Principal. Created by Sal Khan.Watch…
- 19 Apr 08, 11:16pm -
Pressure and Pascal's principle (part 1) | Fluids | Physics | Khan Academy
Pressure and Pascal's principle (part 1) | Fluids | Physics | Khan AcademySal explains the difference between liquids and gasses (both fluids). He then starts a calculation of the work done on a liquid in a U-shaped container. Created by Sal Khan…
- 19 Apr 08, 11:15pm -
Harmonic motion part 3 (no calculus) | Oscillatory motion | Physics | Khan Academy
Harmonic motion part 3 (no calculus) | Oscillatory motion | Physics | Khan AcademyFiguring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring. Created by Sal Khan.Watch the next lesson: https://www.kh…
- 17 Apr 08, 11:53pm -
Harmonic motion part 2 (calculus) | Oscillatory motion | Physics | Khan Academy
Harmonic motion part 2 (calculus) | Oscillatory motion | Physics | Khan AcademyWe test whether Acos(wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx. Created by Sal Khan.Watch the next les…
- 17 Apr 08, 11:52pm -
Introduction to harmonic motion | Oscillatory motion | Physics | Khan Academy
Introduction to harmonic motion | Oscillatory motion | Physics | Khan AcademyIntuition behind the motion of a mass on a spring (some calculus near the end). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/…
- 17 Apr 08, 11:52pm -
Spring potential energy example (mistake in math) | Physics | Khan Academy
Spring potential energy example (mistake in math) | Physics | Khan AcademyA spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!). Created by Sal Khan.Watch the next lesson: https://www.khanac…
- 16 Apr 08, 2:27am -
Potential energy stored in a spring | Work and energy | Physics | Khan Academy
Potential energy stored in a spring | Work and energy | Physics | Khan AcademyWork needed to compress a spring is the same thing as the potential energy stored in the compressed spring. Created by Sal Khan.Watch the next lesson: https://www.kha…
- 16 Apr 08, 1:14am -
Intro to springs and Hooke's law | Work and energy | Physics | Khan Academy
Intro to springs and Hooke's law | Work and energy | Physics | Khan AcademyIntroduction to Hooke's Law. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/hookes-law/v/potential-energy-stored-…
- 15 Apr 08, 10:52pm -
Gravitation (part 2) | Centripetal force and gravitation | Physics | Khan Academy
Gravitation (part 2) | Centripetal force and gravitation | Physics | Khan AcademyA little bit more on gravity. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/int…
- 15 Apr 08, 3:34am -
Introduction to Newton's law of gravitation | Physics | Khan Academy
Introduction to Newton's law of gravitation | Physics | Khan AcademyA little bit on gravity. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/centripetal-force-and-gravitation/gravity-newtonian/v/gravitatio…
- 15 Apr 08, 3:33am -
Conservation of angular momemtum
Conservation of angular momemtumAngular momentum is constant when there is no net torque.More free lessons at: http://www.khanacademy.org/video?v=s_R8d3isJDAFrom:Khan AcademyViews:238340 418ratingsTime:10:12More inEducation
- 10 Apr 08, 11:23pm -
Projectile motion with ordered set notation | Physics | Khan Academy
Projectile motion with ordered set notation | Physics | Khan AcademySolving the second part to the projectile motion problem (with wind gust) using ordered set vector notation. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.…
- 26 Mar 08, 5:48pm -
Unit vector notation (part 2) | Two-dimensional motion | Physics | Khan Academy
Unit vector notation (part 2) | Two-dimensional motion | Physics | Khan AcademyMore on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method. Cre…
- 26 Mar 08, 5:08pm -
Unit vector notation | Two-dimensional motion | Physics | Khan Academy
Unit vector notation | Two-dimensional motion | Physics | Khan AcademyExpressing a vector as the scaled sum of unit vectors. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/two-dimensional-motion/two-dimen…
- 26 Mar 08, 5:08pm -
Introduction to torque | Moments, torque, and angular momentum | Physics | Khan Academy
Introduction to torque | Moments, torque, and angular momentum | Physics | Khan AcademyAn introduction to torque. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/torque-angular-momentum/torque-tutorial/v/m…
- 5 Mar 08, 4:00am -
Center of mass | Impacts and linear momentum | Physics | Khan Academy
Center of mass | Impacts and linear momentum | Physics | Khan AcademyIn this video, David solves an example elastic collision problem to find the final velocities using the easier/shortcut approach.Watch the next lesson: https://www.khanacademy…
- 5 Mar 08, 2:53am -
Mechanical advantage (part 3) | Work and energy | Physics | Khan Academy
Mechanical advantage (part 3) | Work and energy | Physics | Khan AcademyIntroduction to pulleys and wedges. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/mechanical-advantage/v/mechanical…
- 19 Feb 08, 2:52am -
Mechanical advantage (part 2) | Work and energy | Physics | Khan Academy
Mechanical advantage (part 2) | Work and energy | Physics | Khan AcademyMore on mechanical advantage, levers and moments. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-energy/mechanical-advantag…
- 18 Feb 08, 7:40pm -
Introduction to mechanical advantage | Work and energy | Physics | Khan Academy
Introduction to mechanical advantage | Work and energy | Physics | Khan AcademyIntroduction to simple machines, mechanical advantage and moments. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/work-and-en…
- 18 Feb 08, 7:40pm -

Khan Academy - Physics 147-161

Private video

- 26 Mar 08, 5:08pm -
Private video

- 26 Mar 08, 5:08pm -
Work and Energy (part 2)
Work and Energy (part 2)More on work. Introduction to Kinetic and Potential Energies.More free lessons at: http://www.khanacademy.org/video?v=3mier94pbnUFrom:Khan AcademyViews:372604 516ratingsTime:09:52More inEducation
- 17 Feb 08, 8:11pm -
Introduction to work and energy
Introduction to work and energyIntroduction to work and energyMore free lessons at: http://www.khanacademy.org/video?v=2WS1sG9fhOkFrom:Khan AcademyViews:653334 1207ratingsTime:09:18More inEducation
- 17 Feb 08, 8:11pm -
2-dimensional momentum problem (part 2)
2-dimensional momentum problem (part 2)We finish the 2-dimensional momentum problemMore free lessons at: http://www.khanacademy.org/video?v=leudxqivIJIFrom:Khan AcademyViews:125244 209ratingsTime:09:33More inEducation
- 14 Feb 08, 2:36am -
2-dimensional momentum problem
2-dimensional momentum problemAn example of conservation of momentum in two dimensions.More free lessons at: http://www.khanacademy.org/video?v=CFygKiTB-4AFrom:Khan AcademyViews:268539 393ratingsTime:10:36More inEducation
- 14 Feb 08, 2:06am -
Momentum: Ice skater throws a ball
Momentum: Ice skater throws a ballA simple conservation of momentum problem involving an ice skater and a ballMore free lessons at: http://www.khanacademy.org/video?v=vPkkCOlGND4From:Khan AcademyViews:244721 388ratingsTime:06:01More…
- 14 Feb 08, 12:59am -
Introduction to Momentum
Introduction to MomentumWhat momentum is. A simple problem involving momentum.More free lessons at: http://www.khanacademy.org/video?v=XFhntPxow0UFrom:Khan AcademyViews:507314 1252ratingsTime:09:18More inEducation
- 13 Feb 08, 2:02am -
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- 10 Feb 08, 8:41pm -
Private video

- 10 Feb 08, 8:41pm -
Tension in an accelerating system and pie in the face
Tension in an accelerating system and pie in the faceThe second part to the complicated problem. We figure out the tension in the wire connecting the two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a…
- 10 Feb 08, 7:40pm -
Tension (part 2)
Tension (part 2)A slightly more difficult tension problem.More free lessons at: http://www.khanacademy.org/video?v=zwDJ1wVr7IsFrom:Khan AcademyViews:243701 437ratingsTime:10:19More inEducation
- 9 Feb 08, 5:03pm -
Introduction to Tension
Introduction to TensionAn introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them.More free lessons at: http://www.khanacademy.org/video?v=_UrfHFEBIpUFrom:Khan AcademyViews:435057 764ra…
- 8 Feb 08, 11:46pm -