1.State Newton's Second Law of Motion.
2.Define impulse and state its SI unit.
3.What is limiting friction?
4.State the condition for banking angle of a road without friction.
5.A force of $20 \text{ N}$ acts on a mass of $5 \text{ kg}$ for $4 \text{ s}$. Find acceleration and final velocity from rest.
6.A block of mass $10 \text{ kg}$ rests on a rough horizontal surface with coefficient of friction $\mu = 0.3$. Find force required to just move it.
7.An elevator of mass $1000 \text{ kg}$ ascends with acceleration $2 \text{ m/s}^2$. Find tension in cable ($g=10$).
8.A ball of mass $0.2 \text{ kg}$ moving at $20 \text{ m/s}$ is caught in $0.1 \text{ s}$. Find average stopping force.
