2}\). A negative gradient shows the rate of 'slowing down' or deceleration. Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient.

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 ...

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.