Here is the velocity-time graph of a car a) Work out the average
for 40 seconds.
acceleration during the
40 seconds.

Give the units of your answer.

Velocity
(m/s)
b) Estimate the time during the
40 seconds when the
instantaneous acceleration
is equal to the
average acceleration
You must show your working
on the graph to get full marks.
Answer
seconds
Give your answer to
the nearest second.