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(b) How much kinetic energy is lost in the collision?JA railroad car of mass 2.70...

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(b) How much kinetic energy is lost in the collision?JA railroad car of mass 2.70 x 104 kg moving 3.35 m/s collides and couples with two coupled railroad cars, each of the same mass as the 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?m/s

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