This is a short free-response question. Show work for each part. Physics students are doing an experiment on impulse and momentum. For the lab, a student drops a ball of mass 0.5 kg from a height of 1.5 m onto a force plate. The ball hits the force plate and rebounds upward. On the rebound, the student records the maximum height of the ball to be 1.2 m. A force sensor on the plate records the magnitude of force in kN (kilonewtons) over a 3.0 ms time interval while the ball is in contact with the force plate. The following graph shows the magnitude of force as a function of time from that data.