* Speed is a measure of how fast something is moving.

* It's calculated by dividing distance by time.

Therefore, the unit for speed will be a unit of distance divided by a unit of time.

Here are some common units for speed:

* Meters per second (m/s)

* Kilometers per hour (km/h)

* Miles per hour (mph)

* Feet per second (ft/s)

Let me know if you'd like more examples!