Please help, i don't understand this. topic: electric charge, force, and field strength?

You know that the force applied to your proton is 650 N/C. Look up the charge on one proton in Coulombs. Then multiply times 650 N/C to find out how many Newtons of force are being applied. You are probably familiar with the equation F=ma or Force = M times Acceleration. Now that you know the Force, you can look up the M of a proton and then solve for the accleration. Let's call the acceleration "a". The acceleration is the rate of change of the velocity. The acceleration in this problem is constant. So we don't have to deal with derivatives or integrals just yet. We know that the constant acceleration a times the time elapsed t gives us V, the velocity. We know the velocity that we are interested in and we have found a. So solve the eqation for t. a*t=V becomes t = V/a. That is the answer to part b. How far has it moved? Now we have to integrate Velocity over that time interval. V = a*t. The position X = integral of V *dt from 0 to 1.30 106. Integral of Vdt = a*t^2/2 Plug in t and solve for the distance. Now look up the equation for Kinetic Energy, plug in your values and solve.