32 An object of unknown mass is initially at rest and dropped from a height

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

Problem

h

. It reaches the ground with a velocity

\mathrm{v}_{1}

. The same object is then raised again to the same height h but this time is thrown downward with velocity

\mathrm{v}_{1}

It now reaches the ground with a new velocity

v_{2}

. How is

v_{2}

related to

v_{1}

? (A)

\mathrm{v}_{2}=\mathrm{v}_{1} / 2

(B)

v_{2}=v_{1}

(C)

\mathrm{v}_{2}=\sqrt{2} \mathrm{v}_{1}

(D)

v_{2}=2 v_{1}

(E)

v_{2}=4 v_{1}