When kinetic energy of a body becomes $36$ times of its original value,the percentage increase in the momentum of the body will be : (in $\%$)

$A$ 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 $ms^{-1}$)

Two bodies of masses $2m$ and $m$ have their kinetic energies in the ratio $8 : 1$. What is the ratio of their momenta (in $:1$)?

$A$ body of mass $m$ moving with velocity $v$ has kinetic energy equal to $\frac{1}{2} mv^2$. This statement is valid when:

If the kinetic energy of a body is increased by $300\%$,then the percentage change in momentum will be:

Two objects of masses $m_1$ and $m_2$ possess equal kinetic energies. If $p_1$ and $p_2$ are their respective momentum,then $p_1: p_2$ is