Two objects collide. Object A has a momentum of 49 kg • m/s, and Object B has a momentum of 96 kg • m/s before the
collision. What is the total momentum after the collision?

A. 145 kg • m/s
B. 47 kg • m/s
C. 96 kg • m/s
D. 49 kg • m/s

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.