The kinetic energy of a body of mass $4 \,kg$ and momentum $6 \,Ns$ will be (in $\,J$)

If momentum is increased by $20\%$,then kinetic energy ($K$.$E$.) increases by ........... $\%$

$A$ light and a heavy body have equal kinetic energy. Which one has a greater momentum?

An object has momentum $p$ and kinetic energy $E$. If its momentum becomes $2p$,then its kinetic energy will be:

Four particles $A, B, C, D$ of mass $\frac{m}{2}, m, 2m, 4m$ have the same momentum,respectively. The particle with maximum kinetic energy 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 $ms^{-1}$)