Q.

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -

A. a parabola
B. a horizontal straight line
C. a vertical straight line
D. a circle
Answer» A. a parabola
Explanation: Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So, by Newton's first law, it continues its motion horizontally with that velocity.
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