Recent content by buc030

Yeah you have a point there :)

You are right! After I apply E'={\gamma}(E-pv) I get the correct result! Thank. Regarding the name of the process you are probably right, I translated this question from Hebrew so...

Homework Statement A particle of mass m is at rest in the lab frame. The particle discharge a photon with energy 1/2mc^2 to the direction of x+. A spaceship is moving at v = 0.8c in the direction x+ (in the same direction the photon is moving). What is the total energy of the particle after it...