A stone is released from rest at a height above the ground (air resistance negligible)

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A stone is released from rest at a height

h

above the ground (air resistance negligible). Which expression gives its speed just before it reaches the ground? (a)

v = 2\,\sqrt{g h}

(b)

v = \sqrt{\dfrac{g h}{2}}

(c)

v = \sqrt{2 g h}

(d)

v = \sqrt{g h}