help in this 11. If a car starts at rest, and takes a certain power, P, to accelerate to a certain velocity v, how muchpower would it take to accelerate to 2v in the same amount of time?12. If the momentum is tripled, by what factor does its kinetic energy change?13. A heavy object and a light object, both starting from rest are pushed along a frictionless floor forthe same distance. How does their momentum and kinetic energy compare?14. A 2.0 kg ball moving east at 11 m/s collides elastically with a 1.5 kg ball moving 15 m/s west.What is each of their speeds after the collision?15. A baseball with a mass of 145 grams is moving horizontally at a speed of 35 m/s when it strike abat which causes it to move straight up vertically with a speed of 45 m/s. If the club was in contactwith the ball for 1.0 ms, what was the impulse provided to the ball by the bat, and what was theaverage force of the bat on the ball?

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11. If a car starts at rest, and takes a certain power, P, to accelerate to a certain velocity v, how much power would it take to accelerate to 2v in the same amount of time? 12. If the momentum is tripled by what factor does its kinetic energy change?

11. If a car starts at rest, and takes a certain power, P, to accelerate to a certain velocity v, how much power would it take to accelerate to 2v in the same amount of time? 12. If the momentum is tripled by what factor does its kinetic energy change?

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 25P: Review. You can think of the workkinetic energy theorem as a second theory of motion, parallel to...

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