Question

A light body and a heavy body have the same momentum, which one will have greater kinetic energy? Explain. 2

Answer 1

Hey there,

P(momentum)=MV ---(1)

KE(kinetic energy)=1/2MV^2---(2)

Squaring(1) and dividing by 2M we get

=>P^2/2M =KE

For bodies having same momentum(P)

=>KE inversely proportional to mass

So,lighter body will have greater KE than heavier body.

Hope it helps