Ch 5: Work and Energy in Physics

Watch video lessons on work and energy in physics and learn about the work-energy theorem, potential energy, conservative forces and more. These video lessons are short and engaging and make learning easy!

Work and Energy in Physics - Chapter Summary and Learning Objectives

Understand the importance of energy in nature in this chapter, which introduces you to the work characteristics of force and displacement and the relationship between work and energy. You'll see how kinetic energy and potential energy are connected and learn about the effects of conservative and non-conservative forces. When you've watched the lessons in this chapter, you'll be familiar with:

• Characteristics of work
• Work-energy theorem
• Equation for elastic potential energy
• Examples of gravitational potential energy
• Math used for power

Video Objectives
What is Energy? - Definition and Significance in Nature Learn where energy comes from and why it's necessary. Explore some types of energy.
Work: Definition, Characteristics, and Examples Define work and calculate amount of work done. Identify some characteristics of work, such as force, cause and displacement.
Work Done by a Variable Force Describe the process of determining work by a variable force.
Work-Energy Theorem: Definition and Application Analyze the relationship between work and energy and apply the theorem to different situations.
Kinetic Energy to Potential Energy: Relationship in Different Energy Types Find out how different types of energy are classified as potential or kinetic and explain the relationship between these two classifications.
Understanding Gravitational Potential Energy Define this concept and see examples of this form of energy.
Elastic Potential Energy: Definition, Formula & Examples Define this concept and introduce the equation for elastic potential energy. Demonstrate how to apply the concept.
Conservative Forces: Examples & Effects Explain the effect of a conservative force on the mechanical energy of a system.
Non-Conservative Forces: Examples & Effects Describe how mechanical energy is affected by a non-conservative force and see examples of non-conservative forces.
Conservation of Mechanical Energy Analyze situations in which mechanical energy is conserved.
Power: Definition and Mathematics Learn how to calculate power and explain how it's dependent on work and time.

11 Lessons in Chapter 5: Work and Energy 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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