Question

rain is falling vertically downward with a speed of 4km/h-1. A girl moves on straight road with a velocity of 3km/h-1. The apparent velocity of rain respect to the girl is ?

Answer 1

do it by using hypotenuse theorem it's easy

Answer 2

Explanation:

It is given that,

Speed of rain, $v_r=4\ km/h$

Speed of girl, $v_g=3\ km/h$

Let v is the apparent velocity of rain respect to the girl. It can be calculated as :

$v=\sqrt{v_r^2+v_g^2}$

$v=\sqrt{4^2+3^2}$

v = 5 km/h

So, the apparent velocity of rain respect to the girl is 5 m/s. Hence, this is the required solution.