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Ch 14: MTTC Physical Science: Work, Power & Energy

About This Chapter

Although work, power, and energy seem synonymous, in physics these words each have different meanings. Get yourself reacquainted with those meanings in this chapter while you study up for the MTTC Physical Science exam.

MTTC Physical Science: Work, Power & Energy - Chapter Summary

The interrelationship between work, force, power, and energy can explain how the world operates according to physics, and watching these lessons will give you a recap of how those interrelationships function. Some of the related key terms you will need to understand to do well on the MTTC Physical Science exam are as follows:

  • Work, power, and variable force
  • Inclined planes and pulleys
  • Differences between potential and kinetic energy
  • The application of mechanical energy
  • The work-energy theorem

Whereas a typical study guide might have an insanely long list of keywords to memorize, we offer you multiple tools to use for your study sessions, and we organize the information in a way that feels manageable, not overwhelming. On our site, your study tools include brief video lessons, written transcripts of each lesson, and assessments. Thanks to the way we organize everything, the menu shows you every lesson in this chapter, but it also points you to related chapters, in case you need additional help as you get ready for the MTTC Physical Science exam.

9 Lessons in Chapter 14: MTTC Physical Science: Work, Power & Energy
Test your knowledge with a 30-question chapter practice test
Power: Definition and Mathematics

1. 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.

Work: Definition, Characteristics, and Examples

2. 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

3. 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.

Pulleys: Basic Mechanics

4. 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.

Inclined Planes in Physics: Definition, Facts, and Examples

5. Inclined Planes in Physics: Definition, Facts, and Examples

If an object is not horizontal to the ground, it may be on an inclined plane. We need to adjust both the calculations and the free-body diagram when determining the net force on an object on an inclined plane. Learn how in this lesson.

What is Energy? - Definition and Significance in Nature

6. 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.

What is Mechanical Energy? - Definition & Examples

7. 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.

Kinetic Energy to Potential Energy: Relationship in Different Energy Types

8. 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

9. 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.

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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