1)A 861 g rubber ball is dropped from height 15.1 m, and it
rebounds to height 3.15 m. Assuming there is no air friction, find
the magnitude of the impulse, in N-s, exerted by the ground on the
ball.
2)Milly (mass 98.7 kg) runs at 2.73 m/s along the positive
x-axis and then jumps onto a stationary 278 kg box. Milly
and the box slide across the floor for distance 0.357 m, and then
they come to a stop. Find...