A particle is released from rest at a height above the ground and allowed to fall…

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A particle is released from rest at a height

H

above the ground and allowed to fall freely under gravity

g

. Using

s = ut + \frac{1}{2}gt^2

with correct signs, compute the time taken to reach the ground.