Question

Sound moves through the air at a speed of 340 m/s. How long would it take to hear your echo in a canyon which is 50 meters away? Show all of your work with an explanation of your answer.

Answer 1

Answer: 5/17 seconds or roughly .3 seconds

Step-by-step explanation:

We will hear our echo once it has traversed the canyon to reach the end, bounce off, then return back to our ears.

To find how long it travels in one direction:

`(50m)/(340 (m)/(s)) = (5)/(34) s` (or about .14 seconds)

For it to return back to us we double that time.

The time for it to reach our ears would be 5/17 seconds or roughly .3 seconds.