Energy–momentum
The energy–momentum relation, or relativistic dispersion relation, is the relativistic equation relating any object's rest (intrinsic) mass, total energy, and momentum holds for a system, such as a particle or macroscopic body, having intrinsic rest mass m0, total energy E, and a momentum of magnitude p, where the constant c is the speed of light, assuming the special relativity case of flat spacetime.
\[Energy=\sqrt{momentum^{2}\left ( speed \: of\: light \right )^{2} +\left ((rest\: mass)(speed\: of \: light)^{2} \right )^{2}} \]
The equation is:
\[E=\sqrt{p^{2}c^{2}+(m_{0}c^{2})^{2}}\]
Where:
E: Energy
p: momentum
c: speed of light
m0: rest mass
