About This Chapter
Overview of Newton's Laws in Astronomy - Chapter Summary
This chapter helps you quickly refresh your understanding of Newton's laws of motion, gravitation and relativity. Our instructors use simplified definitions and examples to illustrate force formulas and relationships within these laws. You'll also see how these theories are applied in astronomy. When you're finished with the chapter, you should be equipped to:
- Summarize Newton's first, second and third law of motion
- Assess the relationships between weight, mass and gravity in terms of Newton's laws
- Define Newton's laws of gravitation
- Interpret examples that illustrate the theory of relativity
- Explain the theory of general and special relativity
These video lessons are designed to be short and entertaining. You can watch the lessons online using your computer or mobile device, or you can print the lesson transcripts to reference offline. Take the self-assessment quizzes to reinforce your understanding of the information. Finally, if you have any questions along the way, simply use the chapter's handy Ask the Expert feature.
1. Newton's First Law of Motion: Examples of the Effect of Force on Motion
This lesson describes Newton's first law of motion, also known as the law of inertia. The interaction between force and motion is explained. Several examples are used to discuss the implications of this law on earth and in space.
2. Newton's Second Law of Motion: The Relationship Between Force and Acceleration
This lesson defines Newton's second law of motion. Examples are used to illustrate how unbalanced forces cause objects to accelerate. The examples are used to practice calculating acceleration and force for objects in motion.
3. Newton's Third Law of Motion: Examples of the Relationship Between Two Forces
This lesson describes Newton's third law of motion. Examples are provided to illustrate how interacting objects experience forces. The lesson explains how objects accelerate as a result of force. Applications of Newton's third law are illustrated in nature, machines, and space.
4. Newton's Laws and Weight, Mass & Gravity
Did you know that mass and weight are not the same? This lesson describes the difference between the two as well as the effect of gravity on weight. Examples are used to teach you how to calculate weight based on mass and acceleration of gravity.
5. Newton's Law of Gravitation: Definition & Examples
This lesson explains how gravity works mathematically and teaches you how to use Newton's Law of Gravitation to solve problems. A short quiz will follow.
6. Theory of Relativity: Definition & Example
Watch this video lesson, and you will learn about the theory of special relativity and how it applies to you. Learn how you can use one of the most famous equations from this theory to calculate the power inside just one tiny object.
7. General and Special Relativity: Theory and Examples
Special relativity accounts for the constant speed of light in the absence of surrounding mass. General relativity utilizes the concept of space-time to explain the effect of gravity on the speed of light. This lesson compares special and general relativity and provides examples of how the speed of light is affected by gravity.
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Other chapters within the DSST Astronomy: Study Guide & Test Prep course
- History of Astronomy Basics
- How Scientists Think and Work
- Overview of Light in Astronomy
- The Orbits of Celestial Bodies
- The Earth, Sky, and Moon Basics
- The Moon: Formation & Phases
- The Sun's Structure & Components
- The Solar System: Layout, Formation & Dating
- Characteristics of Our Solar System's Planets
- Small Celestial Bodies & Satellites in Our Solar System
- Measurement of Star Qualities
- Star Types and Significance
- The Birth and Life of Stars
- Basics of Star Death
- Neutron Stars & Black Holes
- The Milky Way Galaxy
- Galaxies: Properties & Characteristics
- The Universe: Key Concepts & Theories
- Intro to Life in the Universe
- Celestial Navigation & Timekeeping
- Overview of Telescopes
- DSST Informational Resources
- DSST Astronomy Flashcards