A railroad car of mass 290multiplied by 104 kgmoving at 300


A railroad car of mass 2.90multiplied by 104 kgmoving at 3.00 m/s collides andcouples with two coupled railroad cars, each of the same mass asthe single car and moving in the same direction at 1.20 m/s.

a) What is the speed of the three coupled cars after the collision?
b) How much kinetic energy is lost in the collision?

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Physics: A railroad car of mass 290multiplied by 104 kgmoving at 300
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