A stone is dropped from rest from the edge of a cliff high

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A stone is dropped from rest from the edge of a cliff

40\,\text{m}

high. Take

g = 10\,\text{m/s}^2

. Find the time taken by the stone to reach the ground. (a)

4.0\,\text{s}

(b)

2.0\,\text{s}

(c)

2.8\,\text{s}

(d)

3.0\,\text{s}