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.

Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient. Key fact The gradient of speed-time and velocity-time graphs represent acceleration.

On this graph, the x-axis represents time (t), and the y-axis represents velocity (v). The slope of the line at any given point illustrates the acceleration of an object at that point in time, while ...