Acceleration is the measurement of the speed at which speed is changing during a time duration. Learn its Definition, Formula , Unit, Applications & Types. It is the rate of change in ... Learn how to calculate acceleration using the most common equation and other formulas. See step-by-step breakdowns of acceleration problems with real numbers and units. Acceleration Formula : The formula for calculating acceleration depends on the information available to you from the question. For instance, we use the acceleration formula , a = v / t when acceleration , velocity and time are involved. We also use the acceleration formula , a = f / m in the case of force, mass, and acceleration . Another prominent formula that can help us to determine acceleration is a = Δv / Δt which can also be written as a = (v – u) / t. Acceleration is a vector quantity ...