LOL. I was considering dropping French at first, then I realised how crazy that was, seeing as I have straight As and A+s in French and I think I could pull off a decent SS, followed by epic scaling. As for physics, my report made me LOL. C for pracwork, B for tests, then A+ for exam. Physics ended up being my best exam lol (apart from methods) but yeah, my parents aren't going to refuse my dropping the subject after those inconsistent results. Actually, I don't think they really care which subjects I pick, as long as I don't do something completely ridiculous.
My dad agrees with your dad on the importance of Physics, but I can learn all the interesting bits from the internet and books, and I can always pick it up again in uni, so I don't think parting with VCE Physics is going to scar me for life.