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Q. A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

  • (A) They must have the same volume
  • (B) They must have the same density
  • (C) They must have the same mass
  • (D) They must be dropped in vacuum
  • Correct Answer - Option(D)
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Explanation by: Admin
When a piece of paper and a cricket ball are dropped from the same height, they reach the surface at different time because the shape of the paper is more flat and it behaves like a parachute causing more air resistance acting on it with respect to the ball. But, in order to reach the surface at the same time by both the articles, they must be dropped in vacuum. It is because in vacuum there is no other force other than force of gravity occurring on them and this leads to a conclusion that both the article reaches at the same time.

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