m = 7 kg What is the magnitude of the force exerted on the ball by the wall. V = 13.4 m F = MAV F = 7 ( 13. 4- (-13.4)1 io time of contact - 3 s O m = 7kq V = 13.4 m 10 . 5 2. When an object falls to the ground without bouncing what happens to its momentum The momentum of the object gets transferred to the earth. 3. is the velocity of the first What happens to the Kinetic energy: An obj. in space floating, a second object collides with it, and they stick together. They both have the same moment How much KE was " lost". Wnet- ARe 4. What is the velocity of the first object after the collision 709 9 O O V= 4.2 cm V = 25:6 S cm 5. What happens to the speed of a car as it gets heavier if the initial speed is constant and it is on a frictionless surface