8. Which of the following is one of the postulates of the special theory of relativity? a) All laws of physics are the same in all inertial frames of reference. d) Radioactive emissions can be alpha particles, beta particles or gamma rays. b) Rest mass is a form of energy that is convertible into other usable forms. e) None of the above c) Relativistic kinetic energy is the extra energy a moving object with mass has.