Bumper cars are a fairground ride and are designed to bump into each other. Two bumper cars moving towards each other. 1.)Give two factors that affect the momentum of each bumper car. [2marks]
2.)The bumper cars crash into each other and stop.
Explain why both bumper cars stop after the crash. [4marks]

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.