(a)[1]
On Fig. 1.1, place point P where the car's acceleration is zero.
(b(i))[2]
Find the car's speed at time $t = 15\text{ s}$.
(b(ii))[2]
Determine the average speed of the car from $t = 30\text{ s}$ to $t = 45\text{ s}$.
(c)[3]
On Fig. 1.1, sketch one possible continuation of the distance-time graph.