A man sitting in a train in motion is facing the engine. He tosses a coin up, the coin falls behind him. The train is moving

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forward with uniform speed

backward with uniform speed

forward with acceleration

backward with deceleration

answer is C.

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Detailed Solution

We can say that the horizontal initial velocity of the coin will be identical to that of the train, but if the coin touches down in front of him and he heads the engine, the train has travelled further than the coin. So that the train must be going to accelerate; otherwise, the coin will fall back to the boy or the train will travel backwards with de-acceleration. Therefore, a man sitting in a train in motion is facing the engine. He tosses a coin up, the coin falls behind him. The train is moving forward with acceleration.

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