When a body is released from rest and falls vertically through a distance in time

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

Problem

When a body is released from rest and falls vertically through a distance

s

in time

t

, which of the following expressions gives the magnitude of the acceleration due to gravity

g

? (a)

g=\dfrac{s}{t^{2}}

(b)

g=\dfrac{4s}{t^{2}}

(c)

g=\dfrac{2s}{t^{2}}

(d)

g=\dfrac{s}{2t^{2}}