Speed-time graphs show speed on the vertical axis and time on the horizontal axis. The gradient close gradient In a graph, the gradient is the steepness of the line.

Since the acceleration is defined as the change in velocity divided by the change in time, the slope of a velocity-time graph will be the acceleration of the car.

Speed-time graphs show speed on the vertical axis and time on the horizontal axis. The gradient of a speed-time graph represents acceleration because: gradient = \( \frac {\text{change in y ...