A proton moves with a speed of v = 0.850c. Find its total energy and kinetic energy in units of MeVand compare the latter to the classical kinetic energy (1 eV = 1.60 x 10⁻¹⁹J and the rest mass of a proton: mproton =1.67 x 10⁻²⁷ kg) It's a proton not an electron?