Physics, 05.06.2021 22:20 Jbutler15

A 57g tennis ball is dropped from 1.22 m onto a hard surface, bouncing up to a maximum height of 0.70 m. a)What was the kinetic energy of the ball just before it hit the ground for the first time?
b)How much kinetic energy must the ball have when leaving the ground to bounce to the height of 0.70m?
c)Explain why the two energies in part (a) and (b) are different.

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