Thank you SO much!
Once I applied the kinematics, it worked out. (At least, I think it's right. Will find out after it's graded. If I did the math right, it should be right.)
I had not even thought of using that. But I understand it well enough to explain how to do it now.
Homework Statement
The plate separation of a charged capacitor is 0.0800 m. A proton and an electron are released from rest at the midpoint between the plates. Ignore the attraction between the two particles, and determine how far the proton has traveled by the time the electron strikes the...