and acceleration = velocity change ÷ time. To find the distance travelled, look at the area under the graph. In the first 10 seconds this is the area of the triangle, ½ × 10 s × 40 m/s = 200 m.

Save guides, add subjects and pick up where you left off with your BBC account. The relationship between acceleration, velocity change and the time taken for the change is given by this formula.