I'm taking Physics 1 this semester and am a bit frustrated. For starters, our instructor is not that great. The average grade for our first exam was a 68. I was one of only two students to make an A on the exam. However, despite doing well on that first exam, I don't feel like I am learning all I need to. So anyway, I have been spending a lot of time studying on my own. I have never been one to have to study much in the past to get an A, but I feel like with physics, no matter how much I study and no matter how much I learn, suddenly I see a new problem involving impulse, energy-work, etc., and I am left feeling confused and frustrated again. Just today, I completely messed up my equations because I was evaluating a work-energy equation based on vector values and changing signs for values incorrectly. I felt like I took a step back simply because I hadn't looked at a problem like that in a couple days. It took me like 30 minutes of racking my brain to finally realize what I was doing wrong. The concepts are (for the most part) very easy for me. It is knowing when various values should be evaluated based on the motion diagram (+ or - values) or when they are magnitudes (abs. values) and exactly what equations are optimal for a specific problem that get me sometimes. Is it normal to feel like you take a couple steps forward, then a step back from time to time? My Calc II this semester seems like a piece of cake to me. However, the physics is just something that I feel like is impossible to get down solid because of how expansive it is. I am just frustrated because I love physics and am focused on a physics major, but just feel like I don't have enough hours in the day to master it to the level I want to.