Question

A sonar device fitted in a submarine receive an echo 4s later the signal is transmitted towards another submarine 3060m away find the speed of sound in water

Answer 1

Time=4/2=2sec

We have divided the time by 2 because 4se was the time taken by the signal to come back therefore the time required by the signal to reach submarine is obtained through it.

Distance=3060m

Speed=distance/time

Therefore speed=3060/2

=1,530m/s