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QUESTION
A 9000 kg railroad car moving at 3 m/s strikes a stationary (not moving) 5000 kg railroad car. What is the kinetic energy of the 9000 kg railroad car...
A 9000 kg railroad car moving at 3 m/s strikes a stationary (not moving) 5000 kg railroad car. What is the kinetic energy of the 9000 kg railroad car before the collision? What is the momentum of the 9000 kg railroad car before the collision? If the two railroad cars couple and move of together after collision, what is their velocity?
