Two railroad freight cars with masses 130 mg and 170 mg, Physics

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Two railroad freight cars with masses 130 mg and 170 mg

Two railroad freight cars with masses 130 (Mg) and 170 (Mg) approach with equal speeds of 0.330 (m/s). They collide, the lighter car rebounding opposite its original direction at 0.310 (m/s).

Find the velocity of the heavier car after the collision. Assume the original direction of the lighter car is positive.

What fraction of the original kinetic energy was lost in this inelastic collision?

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Physics: Two railroad freight cars with masses 130 mg and 170 mg

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Physics: Two railroad freight cars with masses 130 mg and 170 mg

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