force, eg 20 newtons (N) to the left displacement, eg 50 kilometres (km) east velocity, eg 11 metres per second (m/s) upwards acceleration, eg 9.8 metres per second squared (m/s²) downwards momentum, ...

The direction of a vector can be given in a written description, or drawn as an arrow. The length of an arrow represents the magnitude of the quantity. If one arrow is twice as long as another, it ...