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A trolley child of total mass 200 kg is moving with a uniform speed of...

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Physics

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A trolley child of total mass 200 kg is moving with a uniform speed of 36 km h on a frictionless track The child of mass 40 kg starts running on the trolley from one end to the other 10 m away with a speed of 10ms relative to the trolley in the direction of the trolley s motion and jumps out of the trolley with the 25 same relative velocity The final speed of trolley is N Find the value of N

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