The potential dissimilarity between the plates of a capacitor is 235 V. Midway between the plates an electron and protons are released. The electron is released from rest. The proton is projected perpendicularly toward the negative plate with an initial speed. The proton strikes the negative plate at the same instant that the electron strikes the positive plate. Ignore the attraction among the two particles, and find the initial speed of the proton (m/s).