Question

A stone is dropped into a well, the sound of the splash is heard after 2.5 seconds. Find the depth of the well if the velocity of sound is 330m/s.

Answer 1

$$\begin{gathered} dis\tan cetravelle=2\times depth \\ time=2.5s \\ speed=330m/s \\ speed=\frac{dis\tan ce}{time}=\frac{2\times depth}{2.5}=330 \\ depth=371.5m \end{gathered}$$