A soft tennis ball is dropped onto a hard floor from a height of 2.32 m and rebounds to a height of 1.41 m. Calculate its velocity, in meters per second, just before it strikes the floor.
Calculate its velocity just after it leaves the floor on its way back up.
Express your answer in meters per second.
Calculate its acceleration during contact with the floor if that contact lasts 3.4 ms (0.0034 s).
