```
a = (v_f - v_i) / t
```
where:
* a is the acceleration in meters per second squared (m/s²)
* v_f is the final velocity of the object in meters per second (m/s)
* v_i is the initial velocity of the object in meters per second (m/s)
* t is the time in seconds (s)
To use this equation, you must know the initial and final velocities of the object, as well as the time elapsed between the two measurements.
For example, if an object starts at rest (v_i = 0 m/s) and accelerates to a final velocity of 10 m/s in 2 seconds, its acceleration would be:
```
a = (10 m/s - 0 m/s) / 2 s
= 5 m/s²
```
This means that the object's velocity is increasing by 5 meters per second every second.
