2. If two bodies of equal masses move with uniform velocity of 'v' and '3v', what will be the ratio of their kinetic energies?
Solution: Mass of first body = m
Velocity of the first body = v Mass of second body = m Velocity of second body = 3v
The ratio of kinetic energies of the two bodies = (kinetic energies of first body)/(kinetic energies of second body)
Therefore the ratio of the kinetic energies = 1:9