AP Physics Workbook 7.C Rotational Energy

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This is the video that cover the section 7.C in the AP Physics 1 Workbook.
Topic over:
1. translational kinetic energy
2. rotational kinetic energy
3. What causes a object to spin

This is a packet given to student by the CollegeBoard and for student to do. Student are to give the packet an honesty attempt and effort. This video is created to supplement the learning and to provide assistance to student in the learning process and is not suppose to be use as a cheating tool.
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Your videos over the workbook problems always help me understand the concepts alot better seeing them being applied. Thank You!

phoenixwolf
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Hello, I wanted to ask about Part D and why there wouldn’t be both KE and PE in the diagram you have drawn? As the sphere leaves the track it will undergo a projectile motion. Resulting in there to be kinetic energy this is due to the velocity in the X-Direction. This results in the sphere not returning to its previous height but indeed having a greater height then the rough track due to there being no friction.(v=sqrt(2gh))

moali