Calculate the impulse of a puck if a hockey stick exerts a force of 120 N on a puck during the 0.05 seconds of contact. Calculate the momentum when a 0. 5 kg is thrown up with a velocity of 30 m/s . Calculate momentum of a 2000 kg railway car moving south at 10 m/s. A 1 kg ball hits the floor down with a velocity of 2 m/s. If the ball bounces up with a velocity of 1.6 m/s, what is the ball's change in momentum? *