A car accelerates uniformly from rest for 20 seconds. It moves at constant speed \(v \mathrm {~m} \mathrm {~s} ^ { - 1 }\) for the next 40 seconds and then decelerates uniformly for 10 seconds until it comes to rest.
For the motion of the car, sketch
a speed-time graph,
an acceleration-time graph.
Given that the total distance moved by the car is 880 m ,