Here's a bit more detail:

* Speed is a measure of how quickly an object changes its position over time.

* It is calculated by dividing the distance traveled by the time taken to travel that distance.

* The units of speed are typically meters per second (m/s) or kilometers per hour (km/h).

For example, if a car travels 100 kilometers in 2 hours, its speed is 50 kilometers per hour (100 km / 2 hours = 50 km/h).