HESI entrance exam

I'm taking the entrance HESI in 2 wks for Rasmussen College's LPN program. We are being tested on all sections-math, grammar, vocab, reading, A/P, biology, chemistry, and physics. We have to score 80% or more in physics, math, grammar, vocab, reading and they don't really look at the chem, a/p, or bio scores. Seems strange to me. I'm really very nervous about the physics as I've never had it in school. The other sections I think will be fine. I see a lot of posts around here saying the test isn't that bad. However it also seems like many schools don't require the physics section. The sample physics problems in the study guide are pretty complex and I just don't get it at all.
Is the physics section of the acutal test as hard as it seems it will be?
Thanks!