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AP Physics 1

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Unit 3

# 3.0 Unit 3 Overview: Circular Motion and Gravitation

Peter Apps

### AP Physics 1Β π‘

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Seemingly simple actions around us, such as car tires spinning or a satellite orbiting a planet, have much more complex processes at hand. In Unit 3, you will continue to build upon your understanding of the physical world using representations to form a more complete and complex model of motion as it relates to gravitational mass and inertial mass. Specific preconceptions will be addressed in this unit, such as the idea of a centrifugal force.
The exam weight of this unit is 4-6% and it tends to span over approximately 7-9 forty-five minute class periods.

Image courtesy of makeameme.org

## Applicable Big Ideas π¨

Big Idea #1: Systems - Objects and systems have properties such as mass and charge. Systems may have an internal structure.
Big Idea #2: Fields - Fields existing in space can be used to explain interactions.
Big Idea #3: Force Interactions - The interactions of an object with other objects can be described by forces.
Big Idea #4: Change - Interactions between systems can result in changes in those systems.

### Key Concepts π

• Vector Field
• Uniform Circular Motion
• Centripetal Force
• Centrifugal
• Centripetal
• Gravitational Force
• Newtonβs Universal Law of Gravitation
• Gravitational Field
• Gravitational Mass
• Inertial Mass
• Frame of Reference
• Vector

### Key Equations π

π₯Watch: AP Physics 1 - Unit 3 Streams

## Resources:

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πUnit 10: Mechanical Waves & Sound
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πUnit 3: Circular Motion
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πUnit 9: DC Circuits