Question

Two bodies of equal masses move with uniform veloties v and 3v respectively . Find the ratio of their kinetic energies

Answer 1

that's the answer hope it helps you

Answer 2

kinetic energy of 1 body=
$\frac{1}{2} m{v}^{2}$
kinetic energy of second body=
$\frac{1}{2} 9m { v}^{2}$
ratio=1:9