1. The problem statement, all variables and given/known data Electrons in a TV tube are accelerated from rest through a 25-kV potential difference. With what speed do they hit the TV? V = 25*10^3 J/C 2. Relevant equations I'm not really sure here. I'm thinking you have to use Newtonian mechanics somewhere here. So, x(t) = (1/2)(a_x)t^2 + (v_0)t +x_0 (v_f)^2 = (v_0)^2 + 2(a_x)d You also need electomagnetic equations. So, delta-V = delta-U/q = -E*delta-r 3. The attempt at a solution This is where I have trouble. I don't even know where to start. Any pointers in the right direction (that aren't too vague!) would greatly be appreciated.