Recent content by missinghorn

four momentum algebra..? can u start me off with the equations? and also where have i missed the gamma..? because i can't seem to find it ..? unless my equations are wrong.

Homework Statement a proton with kinetic energy 10GeV collides with a proton at rest. 1 proton goes off with an angle of 45 degrees relative to the incoming proton. Find the velocity of both protons after the collison. This is an ellastic collision. E(initial) = 938 mev i honestly don't know...