### Introduction to centripetal acceleration (part 1)

by Sal Khan
This video introduces the notion of centripetal acceleration
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### Centripetal Acceleration (part 2)

by Sal Khan
This video sets out to solve a problem involving centripetal acceleration.
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### Centripetal Acceleration (part 3)

by Sal Khan
This video completes the problem in centripetal acceleration.
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### Visual Proof: a= v^2/r

by Sal Khan
This video provides an intuitive proof that a=v^2/r
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### Calculus Proof that a=v^2/r

by Sal Khan
This video provides a proof that a=v^2/r using Calculus.
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### Introduction to angular velocity

by Sal Khan
This video introduces the notion of angular velocity and begins a problem.
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### Conservation of angular momemtum

by Sal Khan
This video introduces the principal of Conservation of Angular Momentum.
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### Gravitation (part 2)

by Sal Khan
This video continues problems involving Newton's Law of Gravitation.
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