Question

A ship on the surface of water sends ultrasonic waves
and receives them back from a submarine inside the
water after 5 seconds. What is the distance of
Submarine from the ship? speed of sound in water
is 1400 ms.​

Answer 1

Answer:

3500 m.

Explanation:

As the ultrasonic waves come back after 5 seconds, they will reach the submarine after 2.5 seconds when emitted. Thus , the time is 2.5 second, the speed is 1400 m/s , so the distance will be : speed ×time = 1400× 2.5 = 3500 m