Question

A boy shouts while standing in front of a hill at a distance of 800 m. The boy hears the echo of his shout after 4.8 seconds. Find the speed of the sound?​

Answer 1

Answer:

The speed of the sound = 333.3 m/s.

Explanation:

Given that:

• Distance (s) = 800 m
• The boy hears the echo after 4.8 seconds.

So, distance of the body from hill =

2s = v × t

To find:

Speed of sound.

Solution:

2s = vt

• Where s = distance
• v = speed of the sound and
• t = time

→ v = 2s/t

Now by substituting the known values, we get

$v = \frac{2 \times 800}{4.8s}$

= 333.3 m/s

Thus, the speed of the sound is 333.3 m/s.