Giancoli's Physics: Principles with Applications, 7th Edition
7
Linear Momentum
Change chapter7-1 and 7-2: Momentum and its Conservation
7-3: Collisions and Impulse
7-4 and 7-5: Elastic Collisions
7-6: Inelastic Collisions
7-7: Collisions in Two Dimensions
7-8: Center of Mass (CM)
7-9: CM for the Human Body
7-10: CM and Translational Motion
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 22
Q
With what impulse does a 0.50-kg newspaper have to be thrown to give it a velocity of 3.0 m/s?
A
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VIDEO TRANSCRIPT
This is Giancoli Answers with Mr. Dychko. Impulse is the change in momentum so we have final momentum minus initial momentum but the newspaper is initially at rest so there's no initial momentum so the change in momentum is just the final momentum so it's mass times final velocity. So change in momentum or impulse, in other words,— two ways of saying the same thing— is gonna be half a kilogram times 3 meters per second, final speed, which gives 1.5 kilograms meters per second of impulse.
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