Homework Statement
Determine the total energy of an electron traveling at 0.98 c
A) 0.25 MeV
B) 0.51 MeV
C) 0.76 MeV
D) 1.8 MeV
E) 2.6 MeV
Homework Equations
KE = 1/2 mv^2
E=mc^2 (rest energy)
The Attempt at a Solution
I had found the velocity for an electron by 0.98 * 3.0...