Question

3 if it takes a sonar echo 8 seconds to reach the bottom of the ocean and return and we know that the speed of sound is 1500 meters per second, how far away is the bottom of the ocean?
8000 meters
6000 meters
4000 meters
1200 meters

Explanation:

Step1: Calculate the one - way time

The echo takes 8 seconds to go down and come back. So the one - way time \(t=\frac{8}{2}=4\) seconds.

Step2: Use the formula \(d = vt\)

The speed of sound \(v = 1500\) m/s and \(t = 4\) s. Then the distance \(d=1500\times4 = 6000\) meters.

Answer:

6000 meters