Ooh finally something I might be able to comment on!
Know your concepts. Often in VCE, people tend to find things harder than they really are because they're not thinking about the principles which lie there. For mechanics, all you really need to know is F=ma, the definitions of momentum and impulse and what can cause the forces. If you approach questions like that, you should be fine. Don't make it mechanical - think to yourself, what's happening? Is there a gravitational force? Is it undergoing circular motion? What's happening to the normal force?
I'd really recommend doing a bit of problem solving. It'll help to get you out of the 'well' that is VCE physics - you'll start thinking about things in terms of the physical principles and not in terms of the style of VCAA principles.
Good luck! If you need more advice on physics, feel free to PM me... hopefully I can give some
