# Ch 11: Force, Motion and Newton's Laws: Homeschool Curriculum

### About This Chapter

## Who's it for?

This unit of our High School Physical Science Homeschool course will benefit any student who is trying to learn about Newton's laws as well as types of force and motion. There is no faster or easier way to learn about physical science. Among those who would benefit are:

- Students who require an efficient, self-paced course of study to learn about free-body diagrams and inclined planes in physics.
- Homeschool parents looking to spend less time preparing lessons and more time teaching.
- Homeschool parents who need a physical science curriculum that appeals to multiple learning types (visual or auditory).
- Gifted students and students with learning differences.

## How it works:

- Students watch a short, fun video lesson that covers a specific unit topic.
- Students and parents can refer to the video transcripts to reinforce learning.
- Short quizzes and a Force, Motion and Newton's Laws unit exam confirm understanding or identify any topics that require review.

## Force, Motion and Newton's Laws Unit Objectives:

- Discover the difference between mass and inertia.
- Examine balanced and unbalanced forces.
- Learn to determine an object's acceleration.
- Define linear momentum and provide examples.
- Identify reaction and action force pairs.
- Explore mass, weight and gravity.
- Calculate net force.
- Discuss velocity and state of motion.

### 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. 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.

### 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. 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.

### 5. 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.

### 6. 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.

### 7. 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.

### 8. 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.

### 9. 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.

### 10. Determining the Acceleration of an Object

Acceleration is a change in an object's state of motion. A few variables need to be identified to calculate an object's acceleration, but once we have those values, we can put them into a simple equation to find out how quickly or slowly an object's velocity is changing.

### 11. Determining the Individual Forces Acting Upon an Object

Objects constantly have forces acting on them whether they are moving or at rest. In this video lesson, you'll understand how to identify the individual forces acting on an object by reviewing the different types of forces and the use of free-body diagrams.

### 12. Air Resistance and Free Fall

Through experiments by Galileo and Newton, we can understand why all objects in free-fall experience the same acceleration, ''g''. We can also see why air resistance affects a falling object's velocity and how this can lead to a falling object reaching a terminal velocity.

### 13. 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.

### 14. 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.

### 15. Identifying Action and Reaction Force Pairs

Good things often come in pairs, and forces are no exception. In this lesson you'll explore Newton's second and third laws of motion to understand how action and reaction pairs affect objects interacting with each other.

### 16. The Normal Force: Definition and Examples

The normal force is also called the contact force because it only exists when objects are touching. In this lesson, we will investigate what the normal force is and how to calculate it on flat and inclined surfaces.

### 17. Friction: Definition and Types

You experience friction all the time, and you should be glad you do! Friction helps keep stationary objects in place as well as slow moving objects down as they slide across a surface. This lesson identifies what friction is and explains the two ways we find this force on earth.

### 18. 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.

### 19. Buoyancy: Calculating Force and Density with Archimedes' Principle

Knowledge of the buoyant force is important when trying to understand why some objects float while other objects sink. In this lesson you'll learn about this unique force and how we apply it to various situations using Archimedes' Principle.

### 20. Linear Momentum: Definition, Equation, and Examples

Any moving object has momentum, but how much momentum it has depends on its mass and velocity. In this lesson, you'll identify linear momentum, as well as see examples of how an object's momentum is affected by mass and velocity.

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### Other Chapters

Other chapters within the High School Physical Science: Homeschool Curriculum course

- Understanding Matter: Homeschool Curriculum
- Understanding Gases: Homeschool Curriculum
- Understanding the Atom & Atomic Structure: Homeschool Curriculum
- The Periodic Table: Homeschool Curriculum
- Understanding Chemical Bonding: Homeschool Curriculum
- Understanding Solutions: Homeschool Curriculum
- Stoichiometry: Homeschool Curriculum
- Acids, Bases and Chemical Reactions: Homeschool Curriculum
- Atomic and Nuclear Physics: Homeschool Curriculum
- Understanding Motion: Homeschool Curriculum
- Work, Energy, Power & Thermodynamics: Homeschool Curriculum
- Waves, Sound & Light: Homeschool Curriculum
- Light in Physical Science: Homeschool Curriculum
- Electricity: Homeschool Curriculum
- Thermal Physics: Homeschool Curriculum
- Magnetism: Homeschool Curriculum
- Intro to Organic Chemistry: Homeschool Curriculum
- The Universe: Homeschool Curriculum
- Atmospheric Science: Homeschool Curriculum
- Geologic Time Scale - Physical Science: Homeschool Curriculum
- The Internal Structure of the Earth: Homeschool Curriculum
- Plate Tectonics - Physical Science: Homeschool Curriculum
- Minerals and Rocks: Homeschool Curriculum
- Igneous Rocks: Homeschool Curriculum
- Sedimentary Rocks - A Deeper Look: Homeschool Curriculum
- Volcanoes - Physical Science: Homeschool Curriculum
- Earthquakes - Physical Science: Homeschool Curriculum
- Weathering and Erosion: Homeschool Curriculum
- Water Balance - Physical Science: Homeschool Curriculum
- Ground Water - Physical Science: Homeschool Curriculum
- Coastal Hazards: Homeschool Curriculum