A photon of energy E interacts with an electron at rest and undergoes pair production, producing a positive electron (positron) and an electron (in addition to the original electron): photon + e+e+ + e+ + e?. The two electrons and the positron move off with identical moment a in the direction of the initial photon. Discover the kinetic energy of the three final particles and discover the energy E of the photon. (Hint: Conserve momentum and total relativistic energy.)
Kinetic energy ___
Photon energy ____