4. Table 2.4 shows how the displacement of a runner changed during a sprint race. Draw a displacement–time graph to show this data, and use it to deduce the runner’s speed in the middle of the race. Table 2.4 Data for a sprinter during a race Displacement (m) 0 4 10 20 50 80 105 Time (s) 1 2 3 6 9 12
Velocity is speed plus direction, so an example of velocity would be a vehicle traveling at 75mph north. Velocity is a vector quantity because it describes both magnitude and direction.
