A 40ton rail car and a 80ton rail car initially at rest are, Ask an Expert

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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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Category:- Physics
Reference No.:- M91071176

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