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.
Momentum Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Momentum
50.000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Momentum Calculator
The Momentum Calculator works out your momentum in an instant. Enter mass and velocity 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 mass.
- Enter the velocity.
- Read off your momentum — the calculator updates automatically, with no button to press.
Formula
The Momentum Calculator uses the formula:
Momentum = Mass × Velocity
Worked example
For example, with mass of 10 kg and velocity of 5 m/s, the momentum is 50.000.
| Mass | 10 kg |
|---|---|
| Velocity | 5 m/s |
| Momentum | 50.000 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Velocity
- The speed of an object in a given direction.
- Momentum
- The quantity of motion of an object, equal to mass × velocity.
Frequently asked questions
Momentum equals mass times velocity: p = mv. A 10 kg object moving at 5 m/s has a momentum of 50 kg·m/s.
Kilogram metres per second (kg·m/s), combining mass in kg and velocity in m/s.
Yes. Momentum has direction, the same direction as the velocity, so signs matter when objects move opposite ways.
Momentum is conserved in collisions, so the total before equals the total after. This underlies how impacts and recoil are analysed.
Enter the mass. Enter the velocity. Read off your momentum — the calculator updates automatically, with no button to press.
Related guides
Momentum Table: Momentum by Mass
Reference table of momentum for Momentum across a range of mass values — exact, engine-computed figures you can read off at a glance.
How to Calculate Momentum: Formula, Steps & Examples
Learn how to calculate Momentum — the formula explained step by step, with worked examples and a free calculator to check your answer.