Question

A light and a heavy body have equal momentum, the kinetic energy is greater for

• A. Heavy Body
• B. Light body
• C. Both heavy and light body
• D. Neither heavy body nor light body

Answer 1

The correct option is B Light body

K.E of a body of mass M and Momentum P is
$K.E.=\frac{P^2}{2M}$

For the bodies having the same Momentum, kinetic energy is inversely proportional to the mass of the body. Thus lighter bodies will have greater momentum.