is measured in metres per second squared (m/s 2) change in velocity (\(\Delta \text{v}\)) is measured in metres per second (m/s) time taken (\(\text{t}\)) is measured in seconds (s) If an object ...

or \(= {ms}^{-2}\). 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.