Question

An observer stands at a certain distance away from a cliff and produces a loud sound. He hears the echo of the sound after 1.8s. Calculate the distance between the cliff and the observer if the velocity of sound in air is 340m^-1.

Answer 1

We know s = d/t

⇒ d = s x t

⇒ d = 340 x 1.8/2

∴ d = 306m.