Give examples demonstrating inertia of rest.

Give examples demonstrating inertia of motion.

Give examples demonstrating inertia of direction.

What do you mean by an impulse of force? Give an example.

Why it is not possible for a man to walk in space?

Explain linear momentum with a suitable example.

If action and reaction act on a body, how is the motion of the body possible?

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}$}\right.$.

A force of $20 \mathrm{N}$ towards east is balanced by an unknown force $f$. What will be the magnitude and direction of unknown force?