This is supposedly the most difficult course in all of high school. It mostly covers the same topics as in grade eleven physics, but in more depth. There is no getting around the fact that you have to spend time doing all the practice problems if you want good marks on the tests. The first unit is the longest, but it is mostly just different ways of using the same few equations. The third unit has the most content, and the fourth involves the most memorization and ’splain problems.