I think presumed knowledge for it is Maths extension 1, physics and english standard.
Yeah, and physics didn't really help except for the basic understanding of the problems.
I didn't do extension, but it went ok. I passed but barely, but having done physics in yr 12 and doing it at uni...it was my worst and hardest subject, dunno if it was just me though.
![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)