About This Chapter
AP Physics C: Newton's Third Law of Motion - Chapter Summary
Use the lessons in this chapter to review how to identify and describe key forces and how they relate to Newton's Third Law of Motion. These lessons on friction, actions, and reactions can help you prepare for questions on the AP Physics Exam related to these concepts. When you have completed this chapter, you should be able to:
- List examples relationship between forces
- Explain how mass, weight, and gravity affect the motion of an object
- Identify action and reaction forces between objects
- Describe normal force
- Categorize friction examples by their types
- Interpret inclined planes and how they affect the forces on an object
The lessons in this chapter are presented through short, engaging video lessons taught by professional instructors. You can easily review specific ideas in the videos using the tagged points in the Timeline feature. There are also transcripts of the videos and self-assessment quizzes available with each lesson that you can use to make sure you are ready for the AP Physics C- Mechanics exam. Your progress through the chapter and course is recorded and can be viewed from your Dashboard.
1. Newton's Third Law of Motion: Examples of the Relationship Between Two Forces
Newton's third law of motion states that forces come in pairs. Learn about how this law is applied in interactions between objects both on Earth and in space.
2. Newton's Laws and Weight, Mass & Gravity
Gravity, which is the pull between two objects that have mass, is a force, which causes different objects to accelerate as they fall. Explore the differences between Newton's laws of weight, mass, and gravity, including how to calculate them, how gravity affects them, and how they are commonly misconceived.
3. Identifying Action and Reaction Force Pairs
Newton's second and third laws of motion state how action and reaction force pairs affect objects' interactions with each other. Explore how forces come in pairs and identify action and reaction, the effect of the forces, and how action equals reaction.
4. The Normal Force: Definition and Examples
In physics, normal force refers to the contact force that occurs when one object is touching another object, such as when a gallon of milk is set on a countertop. Explore the definition and examples of the normal force, and review how normal force occurs on a flat surface as well as on an inclined plane.
5. Friction: Definition and Types
Friction is the force that resists motion between two objects or surfaces that are in contact with each other. Learn about the definition of friction, discover the two types of friction -- static friction and sliding friction, and explore their differences.
6. Inclined Planes in Physics: Definition, Facts, and Examples
In physics, an inclined plane is a tilted, or sloping surface, that attaches a higher elevation to a lower elevation. Explore the definition, facts, and examples of inclined planes in physics, learn about tilted surfaces, determining net force, how friction affects net force, and discover the relationship between gravity and normal force.
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Other chapters within the AP Physics C - Mechanics: Exam Prep course
- AP Physics C: Vectors
- AP Physics C: Kinematics
- AP Physics C: Acceleration, Velocity, & Gravity
- AP Physics C: Newton's First Law of Motion
- AP Physics C: Newton's Second Law of Motion
- AP Physics C: Work, Energy, & Power
- AP Physics C: Linear Momentum
- AP Physics C: Rotational Motion
- AP Physics C: Laws of Gravitation
- AP Physics C: Oscillations
- AP Physics C - Mechanics Flashcards