Acceleration Calculator
Find average acceleration from signed initial and final velocities over a positive time interval.
Formula
ā = (v − u)/Δt.
Elapsed time: 5 s · Average acceleration ≈ ((20)-(0))÷(5 s)
How to use
- Choose a positive axis.
- Enter both signed velocities and elapsed time.
- Read average acceleration in m/s².
Examples
- From 20 m/s to rest in 4 s gives −5 m/s².
Frequently asked questions
Does negative mean slowing down?
Not always; it means acceleration points along the negative axis.
Is acceleration constant?
The result is an interval average; it does not require constant acceleration.
Can equal speeds give acceleration?
Yes. Reversing direction changes velocity even when speed is unchanged.
Sources
Updated: