About This Chapter
TASC Science: Forces & Motion - Chapter Summary
Our instructors give you a clear definition of force and describe the different types of motion to help you easily grasp the content in this chapter. After you've finished this chapter you'll be ready to answer questions on the TASC Science test asking about the following:
- Balanced and unbalanced forces
- Net force
- Newton's law of motion
- Determining forces on an object
- Air resistance
- Free fall
- Linear momentum
- Isolated systems in physics
Use the fun video presentations and informative text components to give you a strong understanding of each lesson topic. You also have self-assessment opportunities through the practice quizzes across the chapter.
Objectives of the TASC Science: Forces & Motion Chapter
The content on the TASC Science test is used to measure your knowledge of the science subjects according to high school equivalency standards. Material from this chapter appears within the physical sciences content area of the TASC Science exam. The questions in this test area make up 36% of the exam's overall content. The vast majority of the items on the test are multiple-choice questions, with the paper version having 49 and the computer format having 48 of them. Each format also has a constructed-response question and the computerized option features an additional technology-enhanced item.
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. 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.
5. 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.
6. 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.
7. 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.
8. Conservation of Linear Momentum: Formula and Examples
The law of conservation of momentum tells us that the amount of momentum for a system doesn't change. In this lesson, we'll explore how that can be true even when the momenta of the individual components does change.
9. Isolated Systems in Physics: Definition and Examples
Systems are important to understand when studying physics, but they are not always easy to describe. In this video lesson, you'll identify isolated systems and understand what makes them unique.
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