Question 4 a)

As

a tennis ball bounces on a hard surface, it undergoes deformation, compressing

and then rebounding. A tennis ball of mass 57.0 g is dropped from a height of

2.4 m onto a concrete surface and rebounds to a height of 1.35 m. During

impact, the ball compresses by approximately 5 mm. Ignore the effects of air

resistance.

How

fast is the ball moving when it hits the concrete surface?