# Ch 6: Basics of Newton's Laws of Motion

### About This Chapter

## Basics of Newton's Laws of Motion - Chapter Summary

Work through this self-paced physics chapter to review Newton's laws of motion. Inside the chapter, you'll find short and engaging lessons that break down each law of motion to explain topics related to mass, inertia, weight and force pairs. Included in the chapter are short self-assessment quizzes to help you solidify your understanding of the material. Our instructors are available to answer your questions, and you can access the chapter at anytime that's convenient. Studying these lessons can help you:

- Explain Newton's first, second and third law of motion
- Differentiate between mass and inertia
- Understand the differences between mass and weight
- Recognize action and reaction force pairs

### 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. 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.

### 3. 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.

### 4. What is Friction? - Definition, Formula & Forces

Friction is the force that opposes the motion of an object. Learn about the sources of friction, identify examples of friction and test your knowledge with quiz questions.

### 5. How to Use Free-Body Diagrams to Solve Motion Problems

The free-body diagram is a powerful way to analyze forces in a scenario. This lesson describes the rules you should follow when using a free-body diagram, and includes multiple examples modeling how to solve force problems.

### 6. 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.

### 7. Newton's Second Law: Meaning & Calculations

In this lesson we'll be learning how to use graphical representations of forces, like free body diagrams and force vs acceleration graphs, to explain Newton's second law. By the end of the lesson, you'll understand these diagrams and how to calculate the net force in two dimensions.

### 8. 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.

### 9. Practice Applying Newton's Second Law

In this lesson, we'll look at the application of balanced and unbalanced forces in Newton's law in order to calculate the acceleration of different objects. We'll also practice calculating unknown forces, mass, and acceleration.

### 10. Practice Applying Force & Acceleration Formulas

In this lesson, we will introduce force and acceleration formulas using Newton's Force Laws and demonstrate kinematic equations, including examples, to solve real-world problems.

### 11. 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.

### 12. Practice Applying Newton's Third Law

This lesson will introduce the reader to Newton's Third Law and give real world examples. We'll also look at example problems that show how we can use Newton's Third Law and other equations to solve for unknown forces.

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### Other Chapters

Other chapters within the Physics 111: Physics I course

- Math Basics for Physics
- The Scientific Model
- Using Vectors in Physics
- Displacement, Velocity & Acceleration
- Understanding Kinematics in Physics
- Newton's Law of Gravitation
- Understanding Work, Energy & Power
- Linear Momentum
- Overview of Rotational Motion
- Overview of Oscillations in Physics
- Overview of Waves in Physics
- Overview of Sound in Physics
- Overview of Light in Physics
- Overview of Fluids in Physics
- Studying for Physics 111