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Two bodies A (of mass 1 ~kg ) and B (of mass 3 ~kg ) are dropped from heights of 16 ~m and 25 ~m , respectively. The ratio of the time taken by them to reach the ground is:

Options

  1. A4 / 5
  2. B5 / 4
  3. C12 / 5
  4. D5 / 12

Correct answer

A. 4 / 5

Step-by-step solution

We know that time taken by a body from height h to reach the ground is. aligned t & = 2 h g t_ A t_ B & = 2 h_ A g 2 h_ B g = h_ A h_ B & = 16 25 = 4 5 . aligned

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