Momentum Calculator
Find linear momentum from mass and velocity.
The quantity of motion
Momentum is mass times velocity, capturing how much motion an object carries. A heavy truck and a fast bullet can have similar momentum despite very different masses and speeds.
A 1500 kg car at 20 m/s has a momentum of 30,000 kg-m/s. Because momentum is conserved in collisions, this quantity governs everything from car crashes to rocket propulsion.
Instant and private
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Frequently Asked Questions
What is momentum?
Mass times velocity — a measure of how much motion an object has and how hard it is to stop.
What units?
Kilograms and metres per second give momentum in kilogram-metres per second.
Is momentum conserved?
In a closed system, total momentum stays constant, which is why this quantity is so central to collisions.
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