Question

A man runs with a velocity of 8 km/h towards east. The velocity of rainfall is 4 km/h vertically downwards. The angle at which the man should hold the umbrella so as to protect himself from the rain:​

Answer 1

Explanation:

Rain is falling vetically downwards with speed 4m/s. Find the direction in which man should hold his umbrella, so that rain does not wet him. Therefore, man should hold his umbrella at an angle of 37∘ east of vertical (or37∘from verticle towards east).