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    Collision: Loss of energy

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    Train A (mass = 400kg) successfully couples with a Train (mass=600 kg). Train A is moving at 2.5 m/s before the collision, and Train B is initially at rest. What is the final velocity of the coupled trains? What is the initial kinetic energy? What is the final kinetic energy? How much kinetic energy is lost? What fraction of the initial KE is lost?

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    Solution Summary

    Fraction of final to the initial energy is calculated when two trains collides.