I notice a lot of people say that physics is all understanding. But to me it seems like useless memorization of formulas (as opposed to say real analysis). I will give an example over here, with my thought process. Perhaps someone who disagrees with me can tell me their thought process, and this may forever change my mind. For instance, impulse. Okay, we note that F = ma = m dv/dt. If we take the intergral of Fdt = m dv then we get Impulse = m (delta)v or mv1 + impulse = mv2 Now we notice that we can use this formula to solve problems which we could solve using other kinematic equations. Memorize this formula, so that when you're given a question like this on the test, you can solve it. To me, things like this really have nothing to understand, it just seems like another formula to memorize. Especially when derivations get much more complicated. You don't have time to actually think about problems on tests, more so than writing down the formulas you've memorized which you think you can use. Am I wrong, or is physics essentially just 100% memorizing formulas and figuring out which one to use to solve a problem?