Question

A sonar device on a submarine sends out a signal and receives an echo 5 seconds later. calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.

Answer 1

Speed of sound = $\frac{ 2 X Displacment}{Time}$

                         = $\frac{2 X 3625 m}{5s}$

                       = 1450 m/s.