Question
A muon has a rest mass energy of 105.7 MeV, and it decays into an electron and a massless particle. (a) If all the lost mass is converted into the electron’s kinetic energy, find $\gamma$ for the electron. (b) What is the electron’s velocity?
1. $207$
2. $2.99796 \times 10^8 \textrm{ m/s}$
Solution Video