Science
Momentum Calculator
Use the momentum calculator to connect an object's mass and velocity to its linear momentum.
Choose the missing quantity; the calculator hides that field and solves it from the others.
Solved value
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- Momentum
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- Mass
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- Velocity
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Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the momentum calculator solves
Use the momentum calculator to connect an object's mass and velocity to its linear momentum.
Formula
How to use it
- Choose the quantity you want to solve for.
- Enter the known values with consistent units.
- Check the rearranged formula, substitution, and warnings before using the result.
How to read the answer
Momentum keeps the sign of velocity, so direction matters when you are working along a line.
Common mistakes and edge cases
- Do not ignore direction in collision problems.
- Mass should be in kilograms.
- Use consistent velocity units before comparing momenta.
Worked examples
Solve the main formula
Solved value
Momentum = 60 kg m/s
Reverse-solve a missing input
Solved value
Mass = -4.8 kg
Frequently asked questions
Can the momentum calculator solve for a missing variable?+
Yes. Use the solve-for control to hide the missing value, then enter the other known values with compatible units.
Why do the units matter?+
Formula calculators assume the entered values are already in matching units. Convert first when your measurements use mixed systems.
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Last updated: May 15, 2026