In Unit 2 we learned about position vs time and difference between speed vs velocity. We also learned about Scalar quantity, Vector quantity, and also displacement vs distance. After all of that we learned about how velocity is equal to the change in distance over the change in time and this in other words is the slope. This is where i became very confused because when solving problems some of the slopes ended up being zero and I just can't think of slopes being zero so i'd keep doing the question over and over again. After awhile i realized that it was just a way of making the problems harder to solve. This is when it all kind of came together and i was able to start really banging problems out. Whoo