Problem: An electron starting from rest acquires 1.3 keV of kinetic energy in moving from point A to point B. A proton starting at rest from point B moves to point A, also gaining kinetic energy.
Part A: Determine the ratio of their speeds at the end of their respective trajectories; that is, what is the ratio (final speed of electron)/(final speed of proton)?
Please show all work so I can fully understand all concepts! Thanks.