a = (v - u) / t

Where:

* a is acceleration

* v is final velocity

* u is initial velocity

* t is time taken

Explanation:

Acceleration is the rate of change of velocity over time. It tells us how quickly an object's velocity is increasing or decreasing.

* (v - u) represents the change in velocity.

* t represents the time it took for that change to occur.

Units:

* Acceleration is measured in meters per second squared (m/s²).

* Velocity is measured in meters per second (m/s).

* Time is measured in seconds (s).

Example:

If a car accelerates from 0 m/s to 20 m/s in 5 seconds, its acceleration would be:

a = (20 m/s - 0 m/s) / 5 s = 4 m/s²