Applications of the Newton's Second Law of Motion

A force of $50 \mathrm{N}$ acts on a body initially at rest. Find the momentum of the body at $3$ second and $6$ seconds after the force starts acting.

Calculate the change in momentum of a car of mass $1500 \mathrm{kg}$ when its speed increases from $18 \mathrm{km}/\mathrm{h} \mathrm{to} 90 \mathrm{km}/\mathrm{h}$ uniformly.

What is the momentum of a boy of mass $40 \mathrm{kg}$ when he walks with a uniform velocity of $2 \raisebox{1ex}{$\mathrm{m}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{s}$}\right.$.

Why is it easier to stop a tennis ball than a cricket ball moving with the same speed?

What is the physical quantity that measures the quantity of motion?

What is the S.l. and C.G.S. unit of momentum?

If you can identify a force acting on an object and yet the object is at rest, what do you conclude from this?

It is difficult to start motion than to maintain it. Why?

A tennis ball and cricket ball both are moving with the same velocity. Which of them has greater momentum and why?