1. The problem statement, all variables and given/known data 2 large metal sheets are seperated by a potential of 40 volts by a vaccum. When the proton particle (mass 1.67x10e-27 kg)is released close to the (+) sheet it moves closer to the (-) sheet by way of electric field. What's the KE right before the proton smacks the other sheet? And what's the velocity of before striking the (-) sheet? 2. Relevant equations KE=>q*v and EK=mv^2/2 3. The attempt at a solution KE= 1.6x10e-19(40)=6.4x10e-18 v= ?