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Physics, 14.03.2020 04:24 ethanmel21

A 40ton rail car and a 80ton rail car, initially at rest, are connected together with a giant but massless compressed spring between them. When released, the 40ton car is pushed away at a speed of 4.8m/s relative to the 80ton car.

What is the speed of the 40ton car relative to the ground?

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A 40ton rail car and a 80ton rail car, initially at rest, are connected together with a giant but ma...
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