Name Date Period Conservation of Momentum Practice Problems Inelastic 1. One train car, mass 5600 kg traveling at 3.4 m/s collides with a stationary train car ofthat same mass and they stick together. What is the nal velocity of the two cars? 2. A North-going Zebu has a mass of 50 kg and is traveling at 4.0 m/s. A South -going Zebu has a mass of 40 kg and is traveling at 5.0 m/s. If they have a perfectly inelastic collision, what is their nal velocity? What are the initial and final total kinetic energies? 3. Two cars have a 'rear end' collision. A 1200 kg Honda moving at 20 m/s strikes a 1000 kg Ford moving at 15 m/s. Their bumpers become locked and they continue to move as one mass. What is theirfinal velocity? 4. Two football players have a headon collision and grab onto each other's uniforms. The 80.0 kg player was moving at 3.0 m/s, while the 70.0 kg player was moving in the opposite direction at 2.5 m/s. What is their nal velocity after impact