Mathematics 0580 · IGCSE · Graphs in practical situations

Graphs in practical situations — practice question

The diagram gives data for the final 70 seconds of a car journey. The vertical axis is labelled Speed (m/s) and runs up to 20, while the horizontal axis is labelled Time (seconds) and extends from 0 to 70. The speed remains steady at 20 m/s from 0 to 60 seconds, then falls linearly to 0 m/s at 70 seconds. The diagram is labelled NOT TO SCALE.
(a)[1]

Find the deceleration of the car in the interval from 60 to 70 seconds.

(b)[3]

Find the distance travelled by the car over the 70 seconds.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$2\ \text{m s}^{-2}$” …

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