Question

When a man is standing, rain drops appears to him falling at 60° from horizontal of his front side. When he is traveling at 5kmph on a horizontal road they appear to him falling at 30° from his front side.the actual speed of rain is?​

Answer 1

ANSWER

solving actual speed of rain v= 5 km/h

Explanation:

let speed of rain be v km/h

.

at rest rain makes angle 60 degree with horizontal .when the man is moving at

u= 5 km/h,

rain appears to fall at 30 degree with horizontal .angle between velocity of rain and man is 60 degree while the result makes angle 30 degree with the velocity of man .

tan30=

u+ vcos60

vsin60

solving actual speed of rain , v= 5 km/h

hope it's helpful

Answer 2

Answer:Let speed of the rain be v km/h.

At rest rain makes angle 60 degree with horizontal.

When the man is moving at u=5km/h, rain appears to fall at 30 degree with horizontal.

So angle between velocity of rain and man is 60 degree while the resultant makes angle 30 degree with the velocity of man.

∴tan30= v sin 60/u+v cos 60

​Solving actual speed of rain, rain v=5km/h

Explanation: