Question

A man walks in rain with a velocity of 5km/h. The raindrops strike at him at an angle of 45 degree with the horizontal. The velocity of the rain if it is falling vertically downward is:

Answer 1

use trigonometry tan 45 degrees

tan 45°= 1

Answer 2

For rain to be vertical...... Velocity of rain w.r.t. man should be zero