Question

A man is walking on a level road at a speed of 3 km h–1. raindrops fall vertically with a speed of 4 km h–1. the velocity of raindrops with respect to the man is

Answer 1

7 km is the answer of question

Answer 2

Answer:we have to find the velocity of the rain drops with respect to man the velocity of the rain as well the velocity of man are given with respect to the street

Vrain,man=$\sqrt {(4)^{2} + (3)^{2} }$

=5km/h

the angle with vertical is Ф,where

tanФ=$\frac{3km/h}{4km/h}$

thus, the rain appears to fall at an angle tan-1(3/4)