Question

Sonar device on a submarine send out a single and receive an echo in 5 second later calculate the speed of sound in watery the distance of the object from the submarine is 3625m

Answer 1

the echo will be 90625m/s that is the answer

Answer 2

2d=v*t
2(3625)=v*5
7250\5 = v
v=1450m/s