Question

A ship sends out ultrasound that returns from the seabed and is detected after 3.42 s. If the speed of ultrasound through sea water is 1531m s^-1, what is the distance of the seabed from the ship?

Answer 1

We know, distance = speed × time 

2d = speed of ultrasound × time 

2d = 1531 × 3.42

∴ d = \(\frac{5236}{2}\) = 2618 m

Thus, the distance of the seabed from the ship is 2618 m or 2.618 km.