1. The problem statement, all variables and given/known data A proton is released from rest at t=o in a uniform electric field whose magnitude is 2.5e-8 N/C. How far has the proton traveled after .5 s? 2. Relevant equations x = vot + 1/2at^2 3. The attempt at a solution x = 1/2(9.81)(.5)^2 = 1.2 but it says the answer is .3m. I'm prety sure I'm using the correct equation so I don't know what is wrong.