The graph between $E$ and $v$ is

If kinetic energy of a body is increased by $300\%$ than percentage change in momentum will be

An object of $1 \,kg$ mass has a momentum of $10 \,kg$ $m/sec $ then the kinetic energy of the object will be .............. $\mathrm{J}$

Two bodies with kinetic energies in the ratio of $4 : 1$ are moving with equal linear momentum. The ratio of their masses is

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that

If the kinetic energy of a body is directly proportional to time $t,$ the magnitude of force acting on the body is

$(i)$ directly proportional to $\sqrt t$
$(ii)$  inversely proportional to  $\sqrt t$
$(iii)$ directly proportional to the speed of the body
$(iv)$ inversely proportional to the speed of body