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.
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Ответ:
The velocity of the ball is 7 m/s
Explanation:
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