# Ch 1: Motion & Forces

Watch online video lessons to learn about the formulas and theories that are used to describe and measure objects in motion. Each lesson is accompanied by a short multiple-choice quiz to help check your understanding of these motion and forces topics.

## Motions and Forces - Chapter Summary and Learning Objectives

In this chapter, you'll learn about the basic scientific factors that are used to describe and graph moving objects, including position, speed and time. Using easy-to-follow visuals, the instructor will explain the relationship between force and motion, or how pulling and pushing actions can cause objects to change direction, form or pace. The different types of force will be discussed, including points of contact and non-contact influences, such as weight.

Through this series of entertaining videos, you'll have the chance to see how Sir Isaac Newton's three laws of motion apply to Earth-bound objects and those in space, as well as the human body. A key part of the chapter will illustrate the important distinction between mass and weight, which will help you understand how the astronauts moved about so effortlessly on the moon. When you've finished watching the videos and taking the self-assessment quizzes, you should be able to:

• Perform calculations involving distance, speed and time
• Understand what is meant by contact, non-contact, balanced and unbalanced forces
• Identify the guiding principles behind Newton's laws of motion
• Understand how gravity keeps our solar system intact

VideoObjective
What is Position? Define position in relationship to a standard reference point and set of reference directions.
Speed and Velocity: Concepts and Formulas Describe what is meant by speed and velocity, and provide the formulas.
Practice Solving Problems of Distance, Time and Average SpeedSolve real-world practice problems involving distance, speed and time.
Interpret Graphs of Position vs. Time and Speed vs. TimeUnderstand the relationship between position and time or time and speed as depicted on a graph.
Force: Definition and TypesDefine force. Differentiate between contact and non-contact force.
Objects with Two or More ForcesUnderstand the cumulative effect of all forces as the result of two or more forces acting simultaneously on an object.
Newton's First Law of Motion: Examples of the Effect of Force on MotionDefine Newton's First Law of Motion.
Newton's Second Law of Motion: The Relationship between Force and AccelerationDescribe Newton's Second Law of Motion.
Newton's Third Law of Motion: Examples of the Relationship between Two ForcesExplain Newton's Third Law of Motion.
Forces: Balanced and Unbalanced Compare balanced and unbalanced forces.
Newton's Laws and Weight, Mass and GravityDiscuss how mass, gravity and weight relate according to Newton's laws.
Role of Gravity in the Solar System Understand the role of gravity in forming and maintaining the shapes of planets, starts and the solar system.

Final Exam
Chapter Exam

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