Kinetic Energy Formula
KE = ½·m·v²
What it means
Kinetic energy is the energy an object has because of its motion. Use it to find how much energy a moving mass carries, or to work backwards to a mass or speed.
Variables
| Symbol | Quantity | SI unit |
|---|---|---|
KE | kinetic energy | J |
m | mass | kg |
v | velocity | m/s |
Worked example
Given m = 2 kg, v = 10 m/s, solve for KE:
KE = 100 J