Which among the following is a form of energy?

$A$ particle is released freely from a height $H$. At a certain height,its kinetic energy is two times its potential energy. Then,the height and the speed of the particle at that instant are respectively ($g=$ acceleration due to gravity).

$A$ $4 \,kg$ mass and a $1 \,kg$ mass are moving with equal kinetic energies. The ratio of the magnitude of their linear momenta is

$A$ horizontal force of $5 \text{ N}$ is applied on a body of mass $5 \text{ kg}$, which is initially at rest on a frictionless table. What is the change in kinetic energy of the body after $10 \text{ s}$?

If the linear momentum of a body is increased by $50 \%$,then the kinetic energy of that body increases by (in $\%$)

If the kinetic energy of a body increases by $0.1\%$,the percent increase of its momentum will be .............. $\%$