Physics, 27.02.2020 02:12 taylerblaylock

A 5000-kg freight car crashes into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. What was the initial speed of the 5000-kg freight car?

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A 5000-kg freight car crashes into a 10,000-kg freight car at rest. They couple upon collision and m...

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