manageable course, definitely, but like bernard says (hey bernard
) doublecheck and see if you even need 1B03 physics at all. have you put any thought into your second year programs?
as for you taking a refresher course/upgrading course in the summer, i don't know about you but that's personally the last way i would want to spend my summer prior to university. haha, kudos to you for wanting to get ready though.
physics was also my weakest subject in High School, but like what everyone's been saying above, it's basically a repeat of Grade 12 Physics in terms of concepts (the only things I hadn't seen before in High School physics was fluids...)
erm, also BE PREPARED TO GET A LOT OF CONCEPTUAL QUESTIONS ON THE MIDTERMS/EXAMS, like not so much calculation based so much as understanding the concepts and applying them without any numbers being involved.
those were BRUTAL, and were definitely responsible for bringing down my mark on the final exam (that and my lack of studying).
just study hard DURING THE YEAR (don't fret too much over the summer in my opinion), practice those conceptual questions (they post a few past midterms and past exams online, so those are definitely useful practice),
AND IF YOU DON'T NEED 1B03 for some Pre-Med requirement or an upper year program, just dont take it haha
L03 is the other option xD
i took B03 physics thinking I was going into biochem...
but now that i'm headed to honours biology it was like the biggest waste ever :|