# Problems: Speed, Velocity and Acceleration

**Question 1**

Fig. shows the speed/time graph for a journey travelled by a tractor.

**(a) **Use the graph to describe the motion of the tractor during each of the marked sections.

OP, PQ, QR, RS

**(b) **Which two points on the graph show when the tractor is stationary?

**(c) **State the greatest speed reached by the tractor.

**(d) **For how long was the tractor travelling at constant speed?

**(e) **State how the graph may be used to find the total distance travelled during the 200 s journey.

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