Physician here. Post #7 is right on about being able to handle college classes preparing for the further rigors of medical school. Besides, as much as I disliked physics, (required for my under grad Chem major) it was worth learning the basics taught in college general physics (calculus based). It is nice to truly understand those equations- still remember how much easier it was to understand the relationship between speed and acceleration when a simple calculus operation linked the two. I find it much easier to retain things when I understand the whys behind them.
Do not look at “why do I need to know this” but at how nice it is to know the foundations of so much. Much of what any student learns in medical school is superseded by the next greatest knowledge. Knowing the foundation helps in adjusting one’s knowledge base. Merely memorizing facts when they may change is not as useful as understanding how those facts were arrived at. Most will forget so much of what is learned of premedical school basic sciences and also medical school basic sciences decades later but will know the logic behind them. Being able to critically evaluate new information is necessary and those foundation sciences help even if one no longer remembers the equations. btw- I once forgot a pH equation but was able to derive it from my chemistry knowledge for a biochemistry exam. You’d be surprised at the amount of physics needed in some medical specialties today.
Medical school is part learning “facts” and vocabulary and part learning how to learn.