5 Figure 1.2.16 shows an incomplete speed-time graph for a boy running a distance of 100 m. a Calculate his acceleration during the first 4 seconds. (2) b 25 Calculate how far the boy travels during the first 4 seconds i ii the next 9 seconds? c Copy and complete the graph, showing clearly at what time he has covered the distance of 100 m. Assume his speed remains constant at the value shown by the horizontal portion of the graph. s/w/paads 754 T 0 2 4 6 8 10 12 14 16 18 20 22 timels ▲ Figure 1.2.16 [2] [2] [Total: 10]​