Calculate the energy an object possesses due to its motion.
Input Parameters
Calculation Results
Enter parameters to calculate energy dynamics
Quick Reference
KEKinetic Energy in Joules
mMass in Kilograms
vVelocity in m/s
Overview
Kinetic energy is the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
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Pro Tips
Kinetic energy increases with the square of velocity—doubling the speed quadruples the energy!
An object's kinetic energy is always zero or positive; it never has a direction (it's a scalar).
Total mechanical energy is the sum of kinetic and potential energy.
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Fun Facts
"The word 'kinetic' comes from the Greek word 'kinesis', meaning motion."
"A 70kg person running at 5 m/s has about 875 Joules of kinetic energy."
"Asteroids hitting Earth have massive kinetic energy because of their high velocity (often over 20 km/s)."
