About This Chapter
AEPA General Science: Analyzing Forces - Chapter Summary
In this series of short, engaging lesson videos, follow along with our expert instructors as they explain the different types of forces and outline some of the ways you can analyze the interactions between them. After you've completed these lessons, you should be better prepared for exam questions regarding:
- Balanced and unbalanced force
- Calculations for net force and the force acting upon an object
- Effects of air resistance on free fall
- Action and reaction force pairs
- Normal force
- Measurements of pressure
- Hydrostatic pressure and fluid mass
- Simple machines, inclined planes and torque
Take advantage of these lesson videos' versatility and watch them on your mobile devices when you are away from your computer. The transcripts will present you with written overviews of the lessons and identify key terms. When you complete these lessons make sure you have retained the information presented in them by taking the lesson quizzes.
AEPA General Science: Analyzing Forces Chapter Objectives
The state of Arizona administers AEPA General Science exam to future science teachers as a way to insure that they're capable of teaching the natural sciences. When you take this computer-based certification exam, you will be presented with 150 multiple-choice questions to answer in three hours or less. About 37% of the exam's questions focus on the physical sciences. This chapter allows you to review the different types of force.
1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. Pressure: Definition, Units, and Conversions
Have you ever wondered what pressure is and how it gets measured? In this lesson, we are going to define pressure and explain some of the units that are used to express measurements of pressure.
10. Hydrostatic Pressure: Definition, Equation, and Calculations
This video lesson will introduce you to hydrostatic pressure in a liquid, as well as provide examples for how to calculate the liquid's pressure at a given depth.
11. Fluid Mass, Flow Rate and the Continuity Equation
Fluids rarely stay put, so we need to understand how they move. In this lesson, you will learn about how the movement of fluids is influenced by the space it passes through, as well as see examples of how to calculate aspects of this movement.
12. What Are Simple Machines? - Definition, Types & Examples
If you need to move or lift a heavy object, it would be wise to use a simple machine. Though these devices are far from fancy or high-tech, they are extremely helpful for getting work done.
13. What is Torque? - Definition, Equation & Calculation
You've probably heard of torque before, maybe while discussing cars. Now learn what it really is, and what it has to do with rotational equilibrium. Then, work through an example problem that combines the two.
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Other chapters within the AEPA General Science (NT311): Practice & Study Guide course
- General Science: Scientific Inquiry
- General Science: Scientific Laws & Theories
- General Science: Scientific Data & Analysis
- General Science: Laboratory Equipment & Safety
- General Science: Science & Society
- General Science: Science in Daily Life
- General Science: Organization of Matter
- General Science: Characteristics of Matter
- General Science: Atomic Structure
- General Science: Nuclear Chemistry
- General Science: Energy & Matter
- General Science: Simple Compounds & Chemical Formulas
- General Science: Types of Chemical Reactions
- General Science: The Mole Concept
- General Science: The Periodic Table
- General Science: Chemical Reactions
- General Science: Equilibrium
- General Science: Acid-Base Chemistry
- General Science: Solutions & Solubility Factors
- General Science: Physics & Motion
- General Science: Newton's Laws
- General Science: Analyzing Motion
- General Science: Electrical Concepts
- General Science: Magnetic Fields & Forces
- General Science: Electromagnetic Spectrum
- General Science: Waves, Optics & Sound
- General Science: Cell Structure & Function
- General Science: Cell Reproduction & Division
- General Science: Biochemistry of Life
- General Science: Characteristics of Living Organisms
- General Science: Plant Structures & Functions
- General Science: The Circulatory System
- General Science: The Nervous System
- General Science: The Immune & Endocrine Systems
- General Science: Other Physiological Systems
- General Science: Reproduction & Development
- General Science: Basic Genetics
- General Science: DNA Transcription & Translation Process
- General Science: Genetic Engineering
- General Science: Evolution
- General Science: History of Life
- General Science: Ecosystems
- General Science: Community & Population Ecology
- General Science: Earth Materials
- General Science: Rocks & Minerals
- General Science: Historical Geology
- General Science: Erosion, Weathering & Wasting
- General Science: Earth's Structure & Processes
- General Science: Plate Tectonics
- General Science: The Water Cycle
- General Science: Oceans
- General Science: Glaciers
- General Science: Other Bodies of Water
- General Science: Earth's Atmosphere & Climate
- General Science: Basic Weather Concepts
- General Science: The Solar System
- General Science: Earth, Moon & Sun
- General Science: Characteristics of the Moon
- General Science: The Universe
- General Science: Orbits of Celestial Bodies
- AEPA General Science Flashcards