CRNA school and physics content

Might not hurt to research some basics such as gas and fluid laws

You will be just fine with out taking physics.
I never took college physics. Took some in high school, but that was many years ago. And I don't think you need it. However, look up some gas laws, I think it will be easier to learn them later.
I'm in my second semester now and still can't understand why did I have to take Organic Chemistry. May be there is something I will use it for later in the program, but I doubt it very much. If there is one thing I could suggest to read prior to starting school is physiology. Yes, physiology, not some aneshtesia text book, becasue you won't understand much anyway, at least I didn't. Read as much as you can of phys and in great detail. Won't hurt to look at the anatomy of the airway either.
Just my 2 cent.
Take care

That depends on how deep you want to get into understanding things down to the molecular level. It helps to have some basic physics understanding when learning about the anesthesia machine and also the kinetics of volatile agents.

I agree with the above. Learn or Re-learn the Gas laws. You can do it on-line at no cost. Here look at these:
Boyle's Law
Charle's Law
Gay Lussac's Law (3rd Gas Law)
Dalton's Law of Partial pressure
Henry's Law

Otherwise don't sweat it. I agree with reviewing physiology (from above)