Question

A ship on the surface of water sends a signal and receives it back from a submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 ms^-1)

Answer 1

Speed of sound in water V = 1450 ms^-1

time to hear echo t = 4s

∴ Distance from Submarine d = `(v xx t)/2`

d = `(1450 xx 4)/2`

= 2900 m

= 2.9 km