Speed = Distance / Time

Where:

* Speed is the rate at which an object moves.

* Distance is the total length of the path traveled.

* Time is the duration of the journey.

Example:

If a car travels 100 kilometers in 2 hours, its speed is:

Speed = 100 km / 2 hours = 50 km/hour

Units of measurement:

* Speed is typically measured in units like kilometers per hour (km/h), miles per hour (mph), or meters per second (m/s).

* Distance is measured in units like kilometers (km), miles (mi), or meters (m).

* Time is measured in units like hours (h), minutes (min), or seconds (s).