# Ch 1: Newton's Laws of Motion

### About This Chapter

## Newton's Laws of Motion - Chapter Summary and Learning Objectives

This chapter introduces Isaac Newton's scientific laws, or rules, pertaining to force and motion and shows how they relate to our everyday lives. You can explore weight, mass, gravity, acceleration, speed, and velocity while you learn about the law of universal gravitation through these lessons. This chapter also clarifies the differences between mass and weight in addition to the distinction between balanced and unbalanced forces. When you complete this chapter, you should be able to:

- Explain Newton's laws of motion
- Describe the effects of mechanics on objects
- State and apply the law of universal gravitation
- Understand the essentials of forces and motion

Video | Objective |
---|---|

Newton's First Law of Motion: Examples of the Effect of Force on Motion | Study the interface between motion and force. |

Newton's Second Law of Motion: The Relationship Between Force and Acceleration | Understand how objects can be caused to accelerate by unbalanced forces. |

Newton's Third Law of Motion: Examples of the Relationship Between Two Forces | Explore examples of this law from machines, nature and space. |

Newton's Laws and Weight, Mass & Gravity | Find the differences between mass and weight. |

What is Acceleration? - Definition and Formula | Calculate acceleration by using a mathematical formula. |

Speed and Velocity: Concepts and Formulas | Compare these two concepts and learn to calculate both. |

Implications of Mechanics on Objects | Define mechanics, motion, inertia, velocity, acceleration, force and equilibrium. |

Law of Circular Motion | Explain this law and give real-life examples. |

Uniform Circular Motion: Definition & Mathematics | Define this motion and use the formula to calculate. |

Newton's Law of Universal Gravitation | Understand why this law is called universal. |

Mass and Weight | Explain the differences between mass and weight. |

Inertia and Mass | Understand the connection between inertia and mass. |

Projectile Motion | Define this type of motion and provide examples. |

State of Motion | Explain how velocity defines an object's state of motion. |

Force: Definition and Types | Explain force and describe the various forms. |

Forces: Balanced and Unbalanced | Understand the distinction between the two and explain equilibrium. |

Free-Body Diagrams | Study how these diagrams show the direction and relative magnitude of forces. |

Net Force | Define net force and explain its relationship to the free-body diagram. |

### 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. What is Acceleration? - Definition and Formula

This lesson describes the difference between speed, velocity and acceleration. Examples are used to help you understand the concept of acceleration and learn to calculate acceleration with a mathematical formula.

### 6. Speed and Velocity: Concepts and Formulas

Did you know that an object's speed and velocity may not be the same? This lesson describes the concepts of speed and velocity relating to objects in motion. We'll look at a specific example to help learn how to calculate both speed and velocity.

### 7. Implications of Mechanics on Objects

Forces act on objects causing them to move. Mechanics is the field of science designated to the study of moving objects. This lesson describes how forces act on objects resulting in motion. Examples are used to describe how forces interact resulting in both simple and complex movement.

### 8. Uniform Circular Motion: Definition & Mathematics

After watching this lesson, you will be able to explain what uniform circular motion is, in terms of both acceleration and forces. You will also be able to use equations for centripetal force and acceleration to solve problems. A short quiz will follow.

### 9. 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.

### 10. Mass and Weight: Differences and Calculations

We often talk about mass and weight as if they are the same. While they are proportional to each other, they are not, in fact, the same. In this video lesson, you will learn to distinguish between the two, as well as convert one to the other.

### 11. Distinguishing Between Inertia and Mass

Mass and inertia are both related to the amount of matter an object has, but they aren't exactly the same thing. In this video lesson, you'll see how mass affects an object's inertia, which in turn affects that object's motion.

### 12. Projectile Motion: Definition and Examples

A projectile is any object that is given an initial velocity and then follows a path determined entirely by gravity. In this lesson, we will introduce projectile motion and touch on a few key facts to keep in mind when working through these problems.

### 13. Projectile Motion Practice Problems

After watching this video lesson, you will know how to use the sets of equations that are used to solve projectile motion problems. Learn how to manipulate them to find the answer you need.

### 14. State of Motion and Velocity

An object's state of motion describes how it is moving. But there are many ways we can describe motion, such as speed and velocity. This motion is relative to other objects around it, such as the earth, the sun, and even other stars in our galaxy.

### 15. Force: Definition and Types

Force is everywhere and it comes in a variety of sizes, directions, and types. In this video lesson, you'll identify force as well the different types of force that objects may experience.

### 16. Forces: Balanced and Unbalanced

Forces are needed to start or stop an object's motion, but can also be involved when an object is at rest or already traveling at constant velocity. In this video lesson, you'll identify the difference between balanced and unbalanced forces, understanding how they affect the movement of objects.

### 17. Free-Body Diagrams

Forces that act on an object can be drawn through special vector diagrams called free-body diagrams. In this video lesson you'll identify how to correctly represent forces in a free-body diagram through vector arrows and force labels.

### 18. Net Force: Definition and Calculations

Because forces are vectors, we can't simply add them up to get a total amount of force on an object. Instead, we calculate the net force, which is important to understand because it tells us about an object's state of motion.

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### Other Chapters

Other chapters within the DSST Principles of Physical Science: Study Guide & Test Prep course

- Energy and Momentum
- Thermodynamics in Physical Science
- Waves and Optics
- Electric Power & Electricity
- Magnetism
- Properties of Matter in Chemistry
- Kinetics in Chemistry
- Elements, Compounds, Mixtures & Solutions
- Bonding in Chemistry
- Gases & Gas Laws
- The Periodic Table
- Phase Changes for Liquids and Solids in Chemistry
- Atomic Theory and Atomic Structure
- Stoichiometry
- Radioactivity
- Equilibrium
- Acids, Bases and Reactions in Chemistry
- Chemistry Lab Basics
- DSST Informational Resources
- DSST Principles of Physical Science Flashcards