Ch 7: AP Physics C: Work, Energy, & Power

About This Chapter

Watch physics video lessons and learn about the relationship between work, energy, and power, plus more. These lessons are just a portion of our AP Physics course.

AP Physics C: Work, Energy, and Power - Chapter Summary and Learning Objectives

If physics is about moving objects, then work, or an applied force that creates movement, is at the heart of this science. In this chapter, you'll learn the formal definitions of work, energy, and power as well as how the three are related. You'll look at experiments and situations that will help you understand the concepts in each video. You'll see the different types of energy in action and how energy works within a system. This chapter is designed to teach you:

  • The definitions of work, energy, and power
  • The equations relating work, energy, and power
  • How to make calculations about work
  • The different types of energy

VideoObjective
Work: Definition and MathematicsTake a look at how physicists define work and the formula that relates it to energy.
Work Done by a Variable ForceSee how an object is affected by a changing force and the calculations you can make.
What is Energy? - Definition and Significance in NatureLearn the definition of energy and how it works in the world.
Kinetic Energy to Potential Energy: Relationship in Different Energy TypesUnderstand the different types of energy and how they are related.
Potential Energy CurvesExplore these graphs that relate energy to an object's position.
Work-Energy TheoremDiscover this fundamental concept that deals with energy from work applied to particles.
What is Mechanical Energy? - Definition and ExamplesTake a look at how mechanical systems include both potential and kinetic energy.
Conservation of Mechanical EnergyUnderstand how energy flows within an isolated mechanical system.
PowerLearn what power means to physicists and the rate of energy transfer.

9 Lessons in Chapter 7: AP Physics C: Work, Energy, & Power
Test your knowledge with a 30-question chapter practice test
Work: Definition, Characteristics, and Examples

1. Work: Definition, Characteristics, and Examples

Pushing a wall all day may feel like work, but unless you get that wall moving you're not doing any work according to the rules of physics. In this video lesson, you'll learn how work is defined as well as how to calculate the amount of work done on an object.

Work Done by a Variable Force

2. Work Done by a Variable Force

Doing work on an object is a simple concept: we apply a certain force over a certain distance. But in real life, that force is rarely constant. Therefore, we need to understand variable forces and be able to calculate them accurately.

What is Energy? - Definition and Significance in Nature

3. What is Energy? - Definition and Significance in Nature

This lesson describes the nature of energy and how it is transferred from one source into another. Additionally, it will describe the significance of energy in natural systems.

Kinetic Energy to Potential Energy: Relationship in Different Energy Types

4. Kinetic Energy to Potential Energy: Relationship in Different Energy Types

This video defines and describes kinetic and potential energy. You'll learn how different types of energy can be classified as potential and kinetic. You'll also find out how kinetic and potential energy are transformed.

Work-Energy Theorem: Definition and Application

5. Work-Energy Theorem: Definition and Application

Work and energy are closely related in physics. In this lesson, you'll learn what that relationship is as well as how we can apply it to various situations.

What is Mechanical Energy? - Definition & Examples

6. What is Mechanical Energy? - Definition & Examples

In physics, energy is how work gets done. This video describes one important type of energy, mechanical energy, and provides examples of both kinetic and potential mechanical energy.

Pulleys: Basic Mechanics

7. Pulleys: Basic Mechanics

Like other simple machines, pulleys can help us lift and move heavy loads with less effort. In this video lesson, you'll learn how pulleys do this as well as how this is possible while still obeying the law of conservation of energy.

Conservation of Mechanical Energy

8. Conservation of Mechanical Energy

Energy comes in many forms and for any system can never be created or destroyed. This holds true for mechanical energy, which also obeys this law of conservation of energy. In this video lesson, you'll explore how mechanical energy is converted or transferred between forms and objects.

Power: Definition and Mathematics

9. Power: Definition and Mathematics

Work involves moving an object with a force, but power tells us how quickly that work is done. In this lesson, you will learn about how power depends on both work and time as well as see examples of how to calculate power.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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