The rate of change of speed is the slope or gradient of the speed-time graph rate of change of speed = gradient of the speed-time graph = \(\frac{\text{final speed – initial speed}}{\text{time ...

text{change in x}} = \frac {\text{change in speed}}{\text{change ... A negative gradient shows the rate of 'slowing down' or deceleration. Velocity-time graphs show velocity on the vertical ...