You probably want to have some physics in high school before taking physics in college (whether it is physics for biology majors and pre-meds competing for the limited number of A grades, or physics for physics and engineering majors who are likely stronger students in physics). (Obviously, you want to have biology and chemistry in high school before taking biology and chemistry in college.)
Regarding AP credit for pre-meds, you may want to read FAQ Pre-med courses, AP/IB/etc. credit and college/DE courses, etc. .