Find the impulse of a 50. kg object under the following scenarios:
a. The object accelerates to 7.5 m/s from rest.
b. The object stops from a velocity of 12.0 m/s.
c. The object change in velocity from 2.2 m/s to 6.3 m/s.
d. The object hits the ground with 2.5 m/s and rebounds with the same speed