A soft tennis ball is dropped onto a hard floor from a height of1.80m and rebounds to a height of1.26m. (Assume that the positive direction is upward.)

(a) Calculate its velocity just before it strikes the floor. m/s (b) Calculate its velocity just after it leaves the floor on its way back up. m/s (c) Calculate its acceleration during contact with the floor if that contact lasts 3.50 ms. m/s² (d) How much did the ball compress during its collision with the floor, assuming the floor is absolutely rigid? m