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99 Percentile Qs Bank for JEE MainPhysicsMotion in Two Dimensions

A man running at a speed of 5 km / h finds that the rain is falling vertically. When he stops running, he finds that the rain is falling at an angle of 60 o with the horizontal. The velocity of rain with respect to running man is

Options

  1. A5 3 km / h
  2. B5 3 2 km / h
  3. C4 3 5 km / h
  4. D5 3 km / h

Correct answer

D. 5 3 km / h

Step-by-step solution

V r = velocity of rain V rm = velocity of rain with respect to man V m = velocity of man tan ⁡ 30 o = V m V r m V r m = 5 1 3 = 5 3 km / h

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