• # question_answer Rain is falling vertically downwards with a velocity of 3 km/h. A man walks in the rain with a velocity of 4 km/h. The raindrops will fall on the man with a velocity of: A)  1 km/h           B)  3 km/hC)  4 km/h           D) $5\,km/h$

Correct Answer: D

Solution :

Relative velocity of the rain wrt man will be 4 km/hr horizontal and -3 km/hr vertical. Hence, resultant velocity will be ${{({{4}^{3}}+{{3}^{2}})}^{1/2}}\,km/hr=5\,km/h.$ Hence, the correction option is [d].

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