Question

Sound travels about 750 miles per hour. If you stand in a canyon and sound a horn, you will hear an echo.Suppose it takes about 4 seconds to hear the echo. How far away is the canyon wall, in feet? (Hint: the distance to the canyon wall is half the distance the sound travels)

Answer 1

The answer to your question is: d = 0.417 mi

Step-by-step explanation:

Data

Speed of sound = 750 mi/h

time = 4 seconds

distance = ?

Formula

s = d / t

time = 2 seconds because in 2 seconds the sounds goes goes from me to the canyon and in two seconds it comes back.

Convert 2s to hours

3600 s ------------------- 1 h

2 s ------------------ x

x = (2 x 1)/3600

x = 0.00056 h

Substitution

d = v x t

d = 750 mi/h x 0.00056 h

d = 0.417 mi