# Specific kinetic energy

Specific kinetic energy
Common symbols
ke, or ek
SI unit J/kg, or m2/s2
Derivations from
other quantities
ek = ½v2

Specific kinetic energy is kinetic energy of an object per unit of mass.

It is defined as ${\displaystyle {\begin{matrix}e_{k}={\frac {1}{2}}\end{matrix}}v^{2}}$.

Where ${\displaystyle e_{k}}$ is the specific kinetic energy and ${\displaystyle v}$ is velocity. It has units of J/kg, which is equivalent to m2/s2.