The rest energy of an electron is 0.511 MeV. The rest energy of a proton is 938 MeV. Assume both particles have kinetic energies of 1.80 MeV. (a) Find the speed of the electron. c (b) Find the speed of the proton. c (c) By what factor does the speed of the electron exceed that of the proton? uelectron uproton = (d) Repeat the calculations in parts (a) through (c) assuming both particles have kinetic energies of 1 800 MeV. (Give the electron's speed to eight decimal places.) uelectron = c uproton = c uelectron uproton =