An object is dropped from the top of a high tower

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

Problem

An object is dropped from the top of a high tower. It covers one-third of the total height of the tower in the first

2\,\text{s}

of its fall. Assuming

g=9.8\,\text{m/s}^2

and negligible air resistance, find the total time it takes to reach the ground. (a)

5.0\,\text{s}

(b)

4.8\,\text{s}

(c)

3.5\,\text{s}

(d)

6.0\,\text{s}