Hooke's Law, Sine, and Differential Equations
When I was an undergrad, I had to take an intro physics course. I liked it quite a bit, but there were a few concepts that I felt were brushed over a bit quickly. Outside of my math and computer science classes, I didn't tend to ask many questions, so I just sat on these questions for a long time. One of them was about how the kinematic equations relate to differentiation/integration (I eventually found my answer here ). Another was on the equation that governs the motion of springs, Hooke's Law.