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Energy of Tossed and Bounced Ball

Hi. This week’s lab is on exploring the mechanical energy of a volleyball as it gets tossed or bounced. Of course, you know something about the conservation of energy, where the kinetic energy as you throw something up changes into gravitational potential energy and changes back to kinetic on the way down so then you […]

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Deriving the Work-Energy Theorem using Calculus
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Deriving the Work-Energy Theorem using Calculus

– Good morning. Today we are going to use calculus to derive the work-energy theorem. And I do understand because this is an algebra-based class that many of you have not taken calculus yet. However, I consider it important to sometimes see math which is a little bit more advanced than what you currently understand. […]

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What Is Energy?
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What Is Energy?

We need energy for pretty much everything, from keeping our bodies moving to keeping the sun burning. But where does it come from? And /why/ do we need it? What /is/ energy, anyway? Hey there! My name’s Alie Energy is pretty complicated, but we’re going to figure it out together! Physicists often describe energy as […]

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PS3A – Definitions of Energy
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PS3A – Definitions of Energy

Hi. It’s Paul Andersen and welcome to disciplinary core idea PS3A which is on definitions of energy. We can look at a lightning strike and we know that there’s energy there somewhere. But a question that we’ve always wondered is what is energy? And as we’ve discovered more and more about energy and different fields, […]

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Bowling Ball Pendulum demo
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Bowling Ball Pendulum demo

(light music) – Let’s talk about energy. So what happens to this ball’s energy level as I lift it upward? It increases, right? As I do more and more work to lift it higher and higher against the pull of gravity I am increasing this ball’s gravitational potential energy. So what happens to all that […]

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