When is a body said to have non-uniform motion? Give two examples of non-uniform motion.

A car moving at a uniform speed covers a distance of $200 \mathrm{m}$ in $4 \mathrm{s}$. Calculate the speed of the car.

A car moving at a uniform speed covers a distance of $200 \mathrm{m}$ in $4 \mathrm{s}$. Calculate the time it will take to cover $300 \mathrm{m}$.

A car moving at a uniform speed covers a distance of $200 \mathrm{m}$ in $4 \mathrm{s}$. Calculate the distance it will cover in $5 \mathrm{s}$.

Sweta swims in a $90 \mathrm{m}$ long pool. She covers $180 \mathrm{m}$ in $90 \mathrm{s}$ by swimming from one end to the other and back along the same straight path. Find the average speed and the average velocity of Sweta.

Distinguish between the following.

Speed and velocity

Distinguish between the following.

Odometer and speedometer