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PY105 pre-class video for session 7 - relative velocity
In this video, we cover the concept of relative velocity, which deals with objects that are moving with respect to one another, and/or moving with respect to an observer. A common example is what happens when you're driving in your car, when other [...]vehicles, trees, bridges, etc. are moving with respect to you. We first cover relative velocity in one dimension, and then extend what we learn to two dimensions.
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PY105 pre-class video for session 5 - an introduction to force
In this video, we go over force ideas. Three forces are discussed in particular - the force of gravity; the force of tension; and the normal force. We also talk about free-body diagrams for the first time. The video ends with a short discussion of [...]Newton's first and second laws of motion, which enable us to connect force to motion.
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PY105 pre-class video for session 3 - velocity and speed
This video deals with the topics of velocity and speed. It includes a discussion of average speed compared to average velocity; how to find instantaneous values of velocity and speed; and how velocity, speed, and displacement can be found from [...]different graphs.
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