https://youtu.be/_E1xmh9d2Pg
PHYS 1101: Lecture Six, Part One
Welcome to Lecture 6. This lecture’s going to cover section 2.7 out of Chapter 2, our last section on the graphical analysis of velocity and acceleration. This graphical analysis will give us a very nice compliment to the motion diagram approach we’ve been developing to understand these vectors, the velocity, and if that velocity vector is changing the acceleration vector.
After all, as we’ve learned, this acceleration vector, a, we can, on our motion diagram, equivalently think of that as the Δv, the different between two velocity vectors. So by looking at graphs of position versus time, velocity versus time, we can gain a nice complement to this vector and motion diagram picture.
We’ll start the lecture, as always, with a warm-up concept question for you. This is going to be question one for your Lecture 6 quiz. Again, if the majority of the class gets it correct I’ll give more points, +5, or +1 otherwise. And you have two choices there, two motion diagrams. Which object, or which motion diagram represents the larger acceleration?