Have either of you taken physiology? I am taking it on a graduate level and it is almost ENTIRELY based on laws learned in physics (hence the name...). Although SOME physics may seem pretty pointless(electricity & magnetism), most of it will come back to be relevant at some point during your medical career.
A successful understanding of physics will increase the chances of successful understanding of physiology tremendously. Most of my classmates in physiology right now that are doing well, claim to have done well in physics. Most who are doing poorly, say they didn't do too hot. Physics is something you need to be fairly good at for physiology. Most of medical school (at least the first 2 years) is devoted to physiology, so why would you care what someone got in an undergrad physiology course? They are going to have to learn the same material in much more depth again. However, if they did well in UG physics, chances are they can do pretty well in physiology (on a medical school level) also.
You can't "learn as you go" because understanding normal human physiology is critical before learning patho-physiology(i.e. how diseases work).
I know the frustration with physics because it really does seem pointless, but from my point-of-view, it is one of the most critical concepts in a pre-medical curriculum. However, I WOULD take out the ridiculous labs that accompany many classes where you don't learn anything half the time. Not only do they take up dozens of hours per week (including having to write up the reports) but they only usually count for 1 freaking hour of credit!