(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electron is accelerated from rest through a potential difference of V volts. What is the final velocity?

I did:

[tex]qV=\frac{mc^2}{\sqrt{1-\frac{v_f^2}{c^2}}}[/tex]

And solve for v, but I get an unreal answer. What am I doing wrong?!

2. Relevant equations

3. The attempt at a solution

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# Accelerating electrons

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