EVERYDAY
Kinetic Energy Calculator
Compute nonrelativistic translational energy and momentum for a mass and speed.
Your result
EVERYDAYEnter your values and select calculate.
On this page How it works & practical examples
How to use the Kinetic Energy Calculator
Use mass in kilograms and speed magnitude in meters per second. The speed is measured relative to your chosen reference frame.
The calculation
K = ½ m v²; momentum magnitude = m v
Worked example
A 2 kg object moving at 3 m/s has 9 J translational kinetic energy and 6 kg·m/s momentum magnitude.
Assumptions and limits
Excludes rotational energy, deformation and relativistic effects. This result alone does not predict impact force or stopping distance.
Common questions
Which inputs should I use?
Use mass in kilograms and speed magnitude in meters per second. The speed is measured relative to your chosen reference frame.
What does the result exclude?
Excludes rotational energy, deformation and relativistic effects. This result alone does not predict impact force or stopping distance.