1. Excuse the dumb questions, I've just started learning physics outside my school course. If this forum doesn't allow this level of questions, then please point me somewhere else. 2. I'm also not sure if I'm allowed to post multiple questions that fall under the same topic, I didn't see anything in the guide lines about that. 3. This is my first post, please tell me if I did something wrong. 1. The problem statement, all variables and given/known data First, why is average velocity called like that? From my understanding, it refers to the amount of displacement in the given time period, so if you go from point A and back to A, your average velocity is 0, but that doesn't exactly refer to velocity. Am I right? 2. When is Vavg useful to me? When do I use it? Can someone give me examples please? 2. Relevant equations 3. The attempt at a solution Also, on a side note (I'm not sure if side notes are allowed), I've started reading the book "Fundamentals of Physics by David Halliday", my main language isn't English, so it's a bit hard to get used to all the scientific terms. It's my first physics book (outside my school course) that I've decided to learn, does anyone recommend any other books, or is this one appropriate? Thank you.