A body projected vertically upwards returns to the point of projection after a few seconds. Draw an acceleration-time graph for the downward journey of the body.

If a car attains a speed of $36 \mathrm{km}/\mathrm{h}$ from rest in $12 \mathrm{minutes}$, what is the distance covered?

A body is moving with a speed of $40 \mathrm{km}/\mathrm{h}$. One second later, it is moving at $58 \mathrm{km}/\mathrm{h}$. What is its acceleration?

A car accelerates uniformly from $18 \mathrm{km}/\mathrm{h}$ to $36 \mathrm{km}/\mathrm{h}$ in $5 \mathrm{s}$. Calculate acceleration in $\mathrm{m}/{\mathrm{s}}^2$.

A car starts from rest and picks up a velocity of $20 \mathrm{m}/\mathrm{s}$ in $10 \mathrm{seconds}$. Calculate the acceleration of the car.

A train starting from rest moves with uniform acceleration attains a speed of $36 \mathrm{km}/\mathrm{h}$ in $10 \mathrm{seconds}$. Find its acceleration.

A truck running at $90 \mathrm{km}/\mathrm{h}$, slows down to $54 \mathrm{km}/\mathrm{h}$ over a distance of $20 \mathrm{m}$. Calculate

a. the retardation produced by its brakes and

b. the time in which the truck slows down.

A motorbike initially moving at $18 \mathrm{km}/\mathrm{h}$ accelerates at the rate of $5 \mathrm{m}/{\mathrm{s}}^2$ for $5 \sec$. Calculate

a. the distance covered by it from start

b. the final velocity.