Question

Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?

Answer 1

Distance of boats d = 4.5 × 10³ m
= 4500 m.
Time t = 3 s
Speed of sound in water = ${\displaystyle \frac{\text{d}}{\text{t}}}$ = ${\displaystyle \frac{4500}{3}}$
= 1500 m/s