Ch 5: Work, Energy, & Power in Physics

Watch online video lessons to learn about kinetic and potential energy, mechanical energy, variable force, and more. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these physics topics.

Work, Energy, & Power - Chapter Summary and Learning Objectives

This chapter's instructors provide you with real-life examples of the forces at play when energy is expended to move an object. Let them familiarize you with the two basic forms of energy, as well as how they can both be used to perform work. This chapter is designed to teach you the following:

• Definition of work
• Difference between potential and kinetic energy
• Characteristics of mechanical energy
• Steps for calculating power

Video Objective
Work: Definition, Characteristics, and Examples Defines work and discusses the characteristics of work, including force, displacement, and cause.
Work Done by a Variable Force Describes the process of determining work done by a variable force.
What is Energy? - Definition and Significance in Nature Explains how energy is used to perform work and explores the necessity of energy as fuel.
Kinetic Energy to Potential Energy: Relationship in Different Energy Types Illustrates the differences between an object's stored energy and the energy resulting from its motion.
Work-Energy Theorem Applies the theorem explaining the relationship between the work done on an object and its kinetic energy.
What is Mechanical Energy? - Definition & Examples Describes the energy resulting from an object's position or motion and identifies examples in nature.
Conservation of Mechanical Energy Analyzes situations in which kinetic energy becomes converted into potential energy and back again.
Power: Definition and Mathematics Discusses the process of calculating units of power by determining variables for time and the amount of energy consumed.

9 Lessons in Chapter 5: Work, Energy, & 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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