Table 2.1 shows how the velocity of a motorcyclist changed during a speed trial along a straight road.

a. Draw a velocity–time graph for this motion.
b. From the table, deduce the motorcyclist’s acceleration during the first 10 s.
c. Check your answer by finding the gradient of the graph during the first 10 s.
d. Determine the motorcyclist’s acceleration during the last 15 s.
e. Use the graph to find the total distance travelled during the speed trial.

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15 30 30 20 10 Velocity / m s-1 Time / s 10 15 20 25 30 Table 2.1: Data for a motorcyclist.