Physics Formulas: Motion, Force and Energy Explained
The core mechanics formulas every student needs — velocity, acceleration, the equations of motion, force, momentum, work, energy and power — explained plainly with worked examples.
Acceleration Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Acceleration
5.000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Acceleration Calculator
The Acceleration Calculator works out your acceleration in an instant. Enter initial velocity, final velocity and time and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the initial velocity.
- Enter the final velocity.
- Enter the time.
- Read off your acceleration — the calculator updates automatically, with no button to press.
Formula
The Acceleration Calculator uses the formula:
Acceleration = (Final velocity - Initial velocity) ÷ Time
Worked example
For example, with initial velocity of 0 m/s, final velocity of 20 m/s and time of 4 s, the acceleration is 5.000.
| Initial velocity | 0 m/s |
|---|---|
| Final velocity | 20 m/s |
| Time | 4 s |
| Acceleration | 5.000 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Velocity
- The speed of an object in a given direction.
- Acceleration
- The rate at which an object's velocity changes over time.
Frequently asked questions
Acceleration is the change in velocity divided by time: a = (final − initial) ÷ time. Going from 0 to 20 m/s in 4 seconds is 5 m/s².
Metres per second squared (m/s²), meaning how many m/s the velocity changes each second.
It means the object is slowing down in the direction of motion, often called deceleration.
Near Earth's surface it is about 9.8 m/s². A free-falling object speeds up by 9.8 m/s every second.
Enter the initial velocity. Enter the final velocity. Enter the time. Read off your acceleration — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Acceleration: Formula, Steps & Examples
Learn how to calculate Acceleration — the formula explained step by step, with worked examples and a free calculator to check your answer.