Elgcool Elgcool

23-03-2024
Physics

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A 40 ton rail car and a 80 ton rail car, initially at rest, are connected together with a giant but massless compressed spring between them. When released, the 40 ton car is pushed away at a speed of 5.0 m/s relative to the 80 ton car.What is the speed of the 40 ton car relative to the ground?

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