Velocity-time graphs ... The area under the graph is the distance moved. The gradient or the steepness of the graph can be used to work out the acceleration. A steep line means high acceleration.

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.

Since the average acceleration is defined as: The slope of the velocity-time graph is the average acceleration. You can see the fitting equation gives an average acceleration of 6 x 10 4 m/s 2.