A man fires a rifle in front of a cliff and hears the echo after 3 second. Calculate the distance of the man from the cliff, if the velocity of sound in air is 340 `ms^(-1)`

Explanation

Here, t3 second, v = 340 `ms^(-1)`, d = ?
2d = velocity (u) of sound in air x time (t) `therefore d=(1020 m)/(2)=510m`
The distance of the man from the cliff is 510 m.