Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 7 - Think and Rank: 52

Answer

a. C, B=D, A. b. C, B=D, A. c. A, B=D, C.

Work Step by Step

a. Momentum is mv. The ball is moving fastest at point C where it has dropped the most, and slowest at point A. It has the same speed at points B and D. b. KE is $\frac{1}{2}mv^{2}$. The ball is moving fastest at point C where it has dropped the most, and has the most KE there. It is moving slowest at point A and has the least KE there. It has the same speed at points B and D. c. PE + KE = constant. PE is greatest where KE is least, and PE is the least where KE is the greatest.
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