Physics Momentum: Mass Times Velocity
Momentum combines how heavy something is with how fast it moves. This calculator multiplies the two for the standard result.
What is the Physics Momentum Calculator?
Enter mass in kilograms and velocity in metres per second. Momentum in kg m/s is their product, and it is conserved in collisions. All physics tools here use standard textbook formulas, labelled as such.
How to use it
- Enter the values in the labelled units.
- Click Calculate Momentum.
- Read the result and its formula.
Worked example
A 5 kg object at 4 m/s has momentum of 20 kg m/s.
What momentum does 5 kg at 4 m/s have?
20 kg m/s, from 5 times 4.
Frequently asked questions
What units should I use?
Use the units on the labels (kg, m, s, N, J, W) so the formula's result comes out in standard units.
Is this exact?
The formula is standard textbook physics; real measurements carry their own errors, but the arithmetic is exact.