Question

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later. If the speed of sound is 340 m/s, how high is the cliff?

Answer 1

Answer:

h = 493 m

Explanation:

Given that,

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later.

The total distance covered by the rock is 2d. We know that,

Speed = distance/time

$v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{340\times 2.9}{2}\\\\d=493\ m$

So, the height of the cliff is equal to 493 m.