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      Question

      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 Correct Answer Incorrect Answer
      B a horizontal straight line Correct Answer Incorrect Answer
      C a vertical straight line Correct Answer Incorrect Answer
      D a circle Correct Answer Incorrect Answer

      Solution

      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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