The kinetic energy of a light body and a heavy body is same. Which one of them has greater momentum?
The kinetic energy of a light body and a heavy body is same. Which one of them has greater momentum?
A body having high velocity
Heavy body
Light body
A body having large displacement
Solution
If $\mathrm{k}$ is the kinetic energy and $\mathrm{p}$ is the momentum, then $\mathrm{k}=\frac{\mathrm{p}^2}{2 \mathrm{~m}} \therefore \mathrm{p}^2=2 \mathrm{mk}$
If $\mathrm{k}$ is constant, then $\mathrm{p}^2 \propto \mathrm{m}$
*