Does anyone know where I can get projectile motion questions with solutions for practice. I've did all the ones in Jacaranda and I'd like to know if there were challenging questions for me to do?
Try the questions from Get Smart: Physics Calculations book.
Apart from doing the projectile questions from past HSC papers I suggest doing projectile questions in past papers from other schools as well, but you have to go through each paper and look for these questions. It's really good to do different questions from other school's exams as it gives you a broader idea of the levels of difficulty these questions can get. Trials papers are the best.
The websites below has links to many past trial papers from various schools.