Question

A person yells across a canyon and hears his echo 6.4 seconds later. If the speed of sound is 335 m/s, how wide is the canyon?

Answer 1

Step-by-step explanation:

An echo is created by a sound wave hitting something and bouncing back.

So the echo travels twice the distance of the width of the canyon. I think the easiest way is to cut the time in half, if you understand what I wrote before this sentence

Formula

d = r * t

Givens

d = ?

r = 335 m/s

t = 6.4 seconds /2

t = 3.2 seconds

Solution

d = r * t

d = 335 m/s * 3.2 seconds

d = 1072 meters across.