Matching Pairs Speed and velocity (D)Online version Speed and velocity by Christopher Tamez 1 3 km is an example of 2 Speed is 3 Displacement is 4 An Acceleration is an 5 An example of scalar: 6 An example of vector: 7 3 km north is an example of 8 Velocity is 9 The SI unit of speed is speed a change in an objects position. distance covered divided by time taken displacement distance displacement divided by time taken velocity m/s Any change in speed! Which means it could be an increase or a decrease in speed.