10) The following diagram shows the distance-tim graph of a particle in a period of 12 seconds. Give that its speed in the last 4 s is 2 ms-1.0.5 Distance (km) h 5 P 1 0 Solution: 2 6 8 Q 12 Time (s) last 4 = 2 = Find a) the value of h b)the total distance, in m, travelled by the particle in 12 s, c)its average speed, in ms-¹, f the whole journey.