Each line segment of a distance-time graph represents one part of a journey ... The distance they travel is calculated using the formula 'distance = speed × time', which means 40 × 1.5 ...

The speed of the vehicle following the purple line for the first 2 seconds is speed = distance ÷ time = gradient = 10 m ÷ 2 s = 5 m/s. Look at this distance-time graph and answer the following ...