A ball of mass 200 g is released from rest at a height of 2.00 m above

Question:

A ball of mass 200 g is released from rest at a height of 2.00 m above the floor and it rebounds straight up to a height of 0.900 m.
(a) Determine the ball’s change in momentum due to its contact with the floor.
(b) If the contact time with the floor was 0.0950 s, what was the average force the floor exerted on the ball, and in what direction?