A soft tennis ball is dropped onto a hard floor from a height of 1.95 m and rebounds to a height of 1.56 m. (Assume that the positive direction is upward.)

(a)Calculate its velocity (in m/s) just before it strikes the floor in m/s

(b)Calculate its velocity (in m/s) just after it leaves the floor on its way back up in m/s

(c)Calculate its acceleration (in m/s²) during contact with the floor if that contact lasts 3.50 ms in m/s²

(d)How much (in m) did the ball compress during its collision with the floor, assuming the floor is absolutely rigid? In m please.