Question

A man sitting in a bus travelling in a direction from west to east with a speed of $40km/h$ observes that the raindrops are falling vertically down. To another man standing on ground the rain will appear

• A. To fall vertically down
• B. The information given is insufficient to decide the direction of rain.
• C. To fall at an angle going from west to east
• D. To fall at an angle going from east to west

Answer 1

The correct option is C To fall at an angle going from west to east


A man is sitting in a bus and travelling from west to east, and the raindrops are appears falling vertically down.
Then let,
$v_m$ = velocity of man
$v_r$ = Actual velocity of rain which is falling at an angle $\theta$ with vertical.
$v_{r}m$ = velocity of rain $w.r.t.$ to moving man
If another man observes the rain standing on ground, then he will find that rain is falling with velocity $v_r$ at an angle going from west to east.