https://youtu.be/CcsQJlks5f0
PHYS 1101: Lecture Eight, Part One
Well, welcome to Lecture 8. This lecture focuses on chapter three, section 3.2. I’m going to introduce to you the specific equations that we’ll use to be able to work problems in two dimensions, and these are going to be problems that are focusing on the motion in 2d, where we know now that, that means our trajectories can be curved.
Let’s start with our first quiz question. This is the question that will give you an opportunity to earn more points if the majority of the class answers it correctly, and asks you about a motion diagram where it’s showing you two points of v0, and you need to pick, from the choices shown to the right, what the next velocity’s going to look like, where point 3 is going to be, given that this is the acceleration that this object experiences.
So this, I remind you, is like the delta v, the change in velocity vector, v0 plus delta v gets you the next velocity. So on all your choices notice this is 0.2, so then this would be 0.3. So these are your options.