Question

A small iron ball is dropped from the top of a vertical cliff and takes 2.5 seconds to reach the. sandy beach.

find the height of the cliff​

Answer 1

height of cliff = 30.6 m

Step-by-step explanation:

Δx = ?

Vo = 0 ball starts from rest

a = g = 9.8 m/s²

t = 2.5 s

Δx = Vot + 1/2at²

Δx = 0 + 1/2(9.8 m/s²)(2.5 s)² = 30.6 m