Question

A man holds an umbrella at 30° vertically to keep himself dry. He, then, runs at a speed of 10 ms-1 and finds the raindrops to be hitting vertically. Speed of the raindrops w.r.t. earth and w.r.t. man are

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Answer 1

Answer:

vre=vmsin30∘=101/2=20ms-1.

Explanation:

A man holds an umbrella at 30^@ with the vertical to keep himself dry. He, then, runs at a speed of 10ms^(-1) , and find the rain drops to be hitting vertically. Study the following statement and find the correct options. <br> i. Velocity of rain w.r.t. Earth is 20 ms^(-1) <br> ii. Velocity of rain w.r.t. man is 10 sqrt(3)ms^(-1) . <br> iii. Velocity of rain w.r.t. Earth is 30 ms^(-1) <br> iv. Velocity of rain w.r. t. man is 10sqrt(2) ms^(-1) .