Velocity$(\mathrm{m}/\mathrm{s})$	20	20	10	20	0
Time$\left(\mathrm{s}\right)$	0	5	7	10	15

The above table shows the velocity of the motorbike at various intervals of time. Plot a velocity-time graph.

Calculate deceleration between $10 \mathrm{s} \mathrm{ans} 15 \mathrm{s}$.

The above table shows the velocity of the motorbike at various intervals of time. Plot a velocity-time graph.

Calculate total distance travelled by the motorbike in $15 \mathrm{s}$.

The above table shows the velocity of the motorbike at various intervals of time. Plot a velocity-time graph.

Calculate the average velocity of the motorbike.

A train starting from rest, picks up a velocity of $20 \mathrm{m}/\mathrm{s}$ in $200 \mathrm{s}$. It continues to move at the same rate for the next $500 \mathrm{s}$, and is then brought to rest in another $100 \mathrm{s}$. Using the velocity-time graph, calculate:

(a) the uniform rate of retardation,

(b) the total distance covered before stopping,

(c) the average velocity over the total journey.