If you are on a trimester system, they probably won't like it. The phy 1-3 is equal to phy 1&2 in a regular system which both grades need to be over a 2.00 (C). So from what I know, they probably won't take it. If you just took an extra semster of physics then I don't think it will kill you.
I don't think it's going to make or break you. They're much more interested in your overall grades than one grade. And, if you're talking about DO school, they're also interested in more tangible factors such as who you are and what you've done.