2 points A constant unbalanced force acts on an object for 3.0 seconds,
producing an impulse of 6.0 Newton . second. What is the magnitude of
the force?
6.0 N
2.0 N
3.0 N
18 N

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.