Question

A boy on a hill A fires a gun. The other boy on hill B hears the sound after $4s$. If the speed of sound is $330m/s$, find the distance between the two hills.

Answer 1

Given,
Speed of sound, $v=330m/s$
Time taken to hear the sound, $t=4s$
We know, distance $=\text{speed}\times \text{time}$
Now, distance between the hills $=v\times t$
$=330m/s\times 4s$
$=1320m$

Hence, the distance between hills is 1320 m.