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**Physics Grade 12 HELP!!!! Electricity Unit**

I have attached the question paper with this post

## Homework Statement

v=2 x 10 ^ 5 m/s

Volatage=250 or 500?

Constants Given:

Coulombs constant = 9 x 10^9

Charge of proton/electron = 1.6 x 10^-19/-1.6 x 10^-19

Proton rest mass 1.673 x 10^-27 kg

Electron Rest Mass= 9.11 x 10^-31 kg

## Homework Equations

EK=EE?

Or Ek+W=0

## The Attempt at a Solution

Ek=0.5mv^2

=0.5*(1.673 x 10^-27) * (2x10^5)^2

=3.346 x 10^-17 J

=3.346 x 10^-17 J + W=0

W=-3.346 x 10^-17 J

STUCKKKK HELP MEEE