3rd Edition

ISBN: 9780133913972

Author: Knight

Publisher: PEARSON

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The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

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Textbook Question

Chapter 4, Problem 52GP

Problems 49 through 61 describe a situation. For each problem, draw a motion diagram, a force identification diagram, and a free-body diagram.

52. You’ve slammed on the brakes and your car is skidding to a stop while going down a 20° hill.

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Chapter 4, Problem 51GP

Chapter 4, Problem 53GP

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A teenager of mass m1 = 68 kg pushes backward against the ground with his foot as he rides his skateboard. This exerts a horizontal force of magnitude Ffoot = 15 N. The skateboard has m2 = 2.6 kg. a) Write an expression in terms of given quantities for the magnitude of the skateboard's acceleration, a, while the teenager is pushing backwards on the ground. b) What is the numerical value for the magnitude of the acceleration, a, in m/s2?

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Chapter 4 Solutions

College Physics- Package

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