If the rest mass of a proton is 1.67x10-21 kg.
1- find its rest mass energy
2- calculate the speed of the proton if its total energy is three times its rest mass energy
3- determine the kinetic energy of the proton
4- what is the momentum of the proton
5- what is the kinetic energy of the proton if its momentum is doupled
An unstable particle brakes in to two fragments of equal momentum, the first fragment of 2.5x10-28kg and speed of 0.893c, and the othe of 1.67x10-27kg, find the speed of the second fragment ????