Question

A person hears the echo of his own sound from a distance hill after 2 seconds . How far is the person from the hill , if the speed of sound is 330 m/s?

Answer 1

Answer:

the distance between the person and the hill is 330 m.

Explanation:

Given;

speed of sound in air, v = 330m/s

time of sound travel, t = 2 s

The distance between the person and the hill is calculated as;

$Distance = Speed \ \times \ Time\\\\Time \ of \ echo = \frac{2\ \times \ distance}{speed} \\\\distance = \frac{Time \ of \ echo \ \times \ speed}{2} \\\\distance = \frac{2 \ \times \ 330}{2} \\\\distance = 330 \ m$

Therefore, the distance between the person and the hill is 330 m.