# Ch 21: Force & Motion

Use this chapter to boost your understanding about the relationship between force and motion, as well as the concepts of speed, velocity, and acceleration. Use these video lessons and quizzes as a study guide when preparing for an examination.

## Force & Motion - Chapter Summary

This collection of lessons explains the subtle difference between distance and displacement, as well as the difference between speed and velocity. You will review how to measure the speed of an object as well as calculate the average speed. The commonly used graphs in physics will also be introduced, in addition to the concepts of impulse and harmonic motion.

The chapter continues with acceleration, how it compares to velocity and speed, and how to calculate it. Then, you will move on to more advanced acceleration topics, including constant acceleration, the acceleration of gravity, and terminal velocity. After reviewing this chapter, you should be able to:

• Differentiate between distance and displacement
• Tell the difference between speed and velocity
• Calculate average speed
• Compare a force-time graph to a force-distance graph
• Measure acceleration using a mathematical formula
• Understand acceleration on a velocity vs. time graph
• Explain the concept of constant acceleration
• Know what the concept of kinematics is
• Use a specific method to calculate the speed of a falling object

Use our quick and easy-to-follow video lessons and quizzes to learn more about a topic of interest or refresh your previous knowledge. These mobile-friendly lessons are available for you to study at any time. After you've completed the video lesson, take the quiz to test yourself on your understanding of the material. If you have questions along the way, contact our instructors for additional help.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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