basicly, the difference between first in the state and liek someone who gets low 90's is
harder compex numbers and vectors.
harder 3unit (the number theory)
mechanics is ALL repeats, there is only like 5 questions ever for each chapter.
Once u do some mechanics, u will fall asleep repeating the same thing over and over again.
the hardest part i found in mechanics was circular motion. (conical pendulum is SO easy, along with resistive motion)
i actually had trouble understanding it, but once i did, fell asleep doing them..(not boring, just ALL THE SAME)