About This Chapter
How It Works:
- Identify the lessons in Glencoe Physical Science's Forces chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the topics on forces that you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Newton's Second Law of Motion
- The types of friction
- Free fall acceleration and air resistance
- The significance of the Law of Universal Gravitation
- Newton's formula for the force of gravity
- The formula for the acceleration of gravity
- Examples of projectile motion
- How to solve projectile motion problems
- Examples of centripetal force
- Newton's Third Law of Motion
- The equation for linear momentum
- The conservation of linear momentum formula
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1. 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.
2. 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.
3. 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.
4. The Law of Universal Gravitation: Definition, Importance & Examples
Gravity is what pulls us toward Earth, but it's also what pulls Earth toward us. This is explained by the law of universal gravitation, which describes how all objects in the universe have this important force between them.
5. Isaac Newton's Formula for the Force of Gravity: Definition & Example
Watch this video lesson and you will see how you can calculate the force of attraction between two objects. Learn why our planets don't spin themselves out of orbit around the sun.
6. The Acceleration of Gravity: Definition & Formula
In this lesson, we will introduce the acceleration due to gravity. Objects in free fall are one of the few real world examples of straight line motion with constant acceleration, so they are commonly used when learning kinematics.
7. 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.
8. 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.
9. 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.
10. 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 within the Glencoe Physical Science: Online Textbook Help course
- Glencoe Physical Science Chapter 1: The Nature of Science
- Glencoe Physical Science Chapter 2: Motion
- Glencoe Physical Science Chapter 4: Energy
- Glencoe Physical Science Chapter 5: Work and Machines
- Glencoe Physical Science Chapter 6: Thermal Energy
- Glencoe Physical Science Chapter 7: Electricity
- Glencoe Physical Science Chapter 8: Magnetism and Its Uses
- Glencoe Physical Science Chapter 9: Energy Sources
- Glencoe Physical Science Chapter 10: Waves
- Glencoe Physical Science Chapter 11: Sound
- Glencoe Physical Science Chapter 12: Electromagnetic Waves
- Glencoe Physical Science Chapter 13: Light
- Glencoe Physical Science Chapter 14: Mirrors and Lenses
- Glencoe Physical Science Chapter 15: Classification of Matter
- Glencoe Physical Science Chapter 16: Solids, Liquids, and Gases
- Glencoe Physical Science Chapter 17: Properties of Atoms and the Periodic Table
- Glencoe Physical Science Chapter 18: Radioactivity and Nuclear Reactions
- Glencoe Physical Science Chapter 19: Elements and Their Properties
- Glencoe Physical Science Chapter 20: Chemical Bonds
- Glencoe Physical Science Chapter 21: Chemical Reactions
- Glencoe Physical Science Chapter 22: Solutions
- Glencoe Physical Science Chapter 23: Acids, Bases, and Salts
- Glencoe Physical Science Chapter 24: Organic Compounds