Two bodies of unequal masses have the same momentum. Which one will have more kinetic energy?

Two masses of $1 \,g$ and $4 \,g$ are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is

If a man increases his speed by $2 \, m/s$,his kinetic energy is doubled. The original speed of the man is:

$A$ boy is rolling a $0.5\, kg$ ball on a frictionless floor with a speed of $20\, ms^{-1}$. The ball gets deflected by an obstacle on the way. After deflection,it moves with $5\%$ of its initial kinetic energy. What is the speed of the ball now? (in $ms^{-1}$)

If the kinetic energy $(K.E.)$ of a particle is doubled,then its momentum will

What is the nature of the graph between the momentum of a body and its kinetic energy?