what is the speed of the proton?? 1. The problem statement, all variables and given/known data What is the speed of a proton after being accelerated from rest through a 50x106 potential difference? m_proton = 1.67x10-27kg C = 1.6x10-19 c * This question is in Relativity. 2. Relevant equations Voltage(v) = Joule(j)/Columb(c) K = 1/2(mu2) 3. The attempt at a solution Firstly, i timed 1.6x10-19 to 50x106 to find the Energy(j ). Then plugged into the kinetic energy formula to find u(speed_proton). But which is wrong. what is the mistake?