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A passenger in moving train tosses a coin which falls behind him. It means that the motion of the train is

1. Accelerated
2. Uniform
3. Retarded
4. Circular motion

Correct answer: Retarded

Solution

When the coin is tossed up, it keeps the train’s horizontal speed at the moment of release due to inertia. If the train slows down afterward, the passenger moves forward relative to the coin, so the coin appears to fall behind. That indicates the train is retarded (decelerating).

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