What is the equation for acceleration?

There are quite a number of equations allowing us to calculate acceleration.

We define acceleration as the rate of change of velocity, so one equation would be

acceleration = change in velocity/time

If we define an initial velocity as u, and a final velocity as v, then the change in velocity would be v-u.

If we let t stand for the time between our initial and final measurements, then our equation becomes:

a = (v-u)/t

This allows us to find an average acceleration over the time period we're studying.