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An empty freight train car of mass 10000 kg is rolling along a level of track...

An empty freight train car of mass 10000 kg is rolling along a level of track at 2.00 m/ s . It collides with a loaded car of weight 1.96 * 10^5 n which is at rest . What is the speed of the train after the collision
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Answer #1

Mv = [M+m]V

V = .1*105*2/1.96*105/9.8+.1*105

V = .667m/sec

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