Answer: Tennis Ball TestingA tennis ball bouncing on a
Chapter 10, Problem 78PP(choose chapter or problem)
Problem 78PP
Tennis Ball Testing
A tennis ball bouncing on a hard surface compresses and then rebounds. The details of the rebound are specified in tennis regulations. Tennis balls, to be acceptable for tournament play, must have a mass of 57.5 g. When dropped from a height of 2.5 m onto a concrete surface, a ball must rebound to a height of 1.4 m. During impact, the ball compresses by approximately 6 mm.
By approximately what percent does the kinetic energy decrease?
A. 35%
B. 45%
C. 55%
D. 65%
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