Question: An electron and a positron (an anti electron) make a head-on collision, each moving at v = 0.9999c. In the collision the electrons disappear and are replaced by two muons (mc2 = 105.7 MeV) which move off in opposite directions.
Question I: What is the kinetic energy of each of the muons?
I need help to find the kinetic energy of each of the muons.