A soft tennis ball is dropped onto a hard floor from a height of 1.25 m and rebounds to a height of 0.85 m. For this problem, use a coordinate system in which up is positive.
a. Calculate the vertical component of its velocity, in meters per second, just before it strikes the floor.
b. Calculate its velocity, in meters per second, just after it leaves the floor on its way back up.
c. Calculate its average acceleration, in meters per second squared, during contact with the floor if that contact lasts 3.50 ms (3.50 × 10^-3 s).
d. How much did the ball compress, in meters, during its collision with the floor, assuming the floor is absolutely rigid?