To a stationary man rain is falling on his back with
a velocity 6 km/h at an angle 30' with vertical. To
make the rain velocity appear vertical the man
should move
(1) Forward with a velocity 3 km/h
(2) Forward with a velocity 3/3 km/h
(3) Backward with a velocity 3 km/h
(4) Forward with a velocity 213 km/h
- from the ground.

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MathPhys MathPhys · Answer 1 · 2019-10-20T16:00:40+02:00

Answer:

(1) Forward with a velocity 3 km/h

Explanation:

To make the rain vertical with respect to the man, the man must match the horizontal component of the rain.

v = 6 sin 30°

v = 3

The man must run forward at 3 km/h.

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