For kinetic energy, I feel like this should be identical to a physics 1 satellite question involving kinetic energy, where I must find the velocity at which the centripetal force matches the attractive force between the charges. From there solving for kinetic energy is simply a matter of plugging the mass and velocity into the equation.

I'm having trouble mathematically expressing the attractive force as equal to the centripetal force.

I am attempting to take the force= Electric field x test charge, so kQ(proton)/r^2 x q(electron)

and match it to

m(electron)v^2/r

Am I on the right track here conceptually?