Question

A light and a heavy body have equal K.E. which has greater momentum?

• A. The heavy body
• B. The light body
• C. Both have equal momentum
• D. Data given is incomplete

Answer 1

Answer: (A)

The heavy body

Kinetic energy is given by $K.E.=\frac{P^2}{2m}$

Given both bodies have same K.E.

$P\propto \sqrt{m}$

Hence, heavier body will have greater momentum.