# Ch 3: Energy, Work & Power in Physics

In this chapter, review the concepts of power, work and energy as they apply to the study of physics. Formulas and examples are presented, and you can learn the definition of important terms. Use these lessons and quizzes as a comprehensive study guide to prepare you for an upcoming test or homework assignment.

## Energy, Work & Power in Physics - Chapter Summary

This chapter will define what physics calls work, show you how to calculate it, and explain work's relationship with variable force. The specifics needed to define and calculate power are also presented. You will be introduced to the concepts of kinetic energy, potential energy, elastic potential energy and gravitational potential energy.

Our instructors will explain the differences between conservative and nonconservative forces, as well as how mechanical energy obeys the law of conservation of energy. The work-energy theorem will be introduced with explanations about its applications. Once you have completed this lessons, you should be able to:

• Define work using the rules of physics
• Calculate variable forces
• Use work and time to calculate power
• Differentiate between kinetic and potential energy
• Explain gravitational potential with examples
• Tell if a force is conservative or nonconservative
• Understand how mechanical force is transferred and converted
• Apply the work-energy theorem to various situations

Our professionally-designed lessons and quizzes are mobile-friendly and available for you to review at any time. Each lesson is accompanied by a printable transcript so you can study the material offline as well. The lesson quizzes and chapter tests help you gauge how well you understand the topic and if you need to review parts of the lesson again. If you have questions about the lesson, contact one of our instructors for help.

10 Lessons in Chapter 3: Energy, Work & Power in Physics
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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