Momentum Change Calculator
Momentum and change in momentum of a mass.
Enter your values
Enter the mass in kg.
Enter the initial velocity in m/s.
Enter the final velocity in m/s.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Change in momentum
- -12000 kg·m/s
- Initial momentum
- 12000 kg·m/s
- Final momentum
- 0 kg·m/s
Quick answer
Momentum p = m x v; change in momentum = m x (v2 - v1).
delta p = m(v2 - v1)
At a glance
| What it does | Momentum and change in momentum of a mass. |
|---|---|
| Category | Physics |
| Inputs needed | Mass, Initial velocity, Final velocity |
| Main output | Change in momentum |
| Formula | delta p = m(v2 - v1) |
| Cost | Free — no sign-up, no download |
How to use the Momentum Change Calculator
- 1Enter the object's mass.
- 2Enter the velocity before and after the event.
- 3Read the change in momentum, which equals the impulse applied.
Inputs explained
- Mass(kg)
- Enter the mass in kg.
- Initial velocity(m/s)
- Enter the initial velocity in m/s.
- Final velocity(m/s)
- Enter the final velocity in m/s.
Worked example
Using the values the calculator loads with:
Inputs
- Mass1200 kg
- Initial velocity10 m/s
- Final velocity0 m/s
Results
- Change in momentum-12000 kg·m/s
- Initial momentum12000 kg·m/s
- Final momentum0 kg·m/s
Frequently asked questions
What is the sign of the answer?
A negative change means momentum decreased in the chosen positive direction, such as during braking.
How does this relate to force?
Force = change in momentum divided by the time over which it happens.
What do I need to enter into the Momentum Change Calculator?
Just 3 values: mass, initial velocity, final velocity. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Momentum Change Calculator work out the answer?
Momentum p = m x v; change in momentum = m x (v2 - v1). It applies the formula delta p = m(v2 - v1) and shows the working so you can check each step by hand.
Is the Momentum Change Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.