# Ch 19: Motion in Physics

### About This Chapter

## Motion in Physics - Chapter Summary

Our instructors will define motion, its laws, and the vital part it plays in the study of physics. Other ways to describe motion, including velocity and speed, are explained. You will also review the differences between acceleration, velocity and speed.

The important physics concept of momentum is also covered in this chapter. Once you have read through these lessons, you should be able to do the following:

- Calculate acceleration using a formula
- Define force as it is used in physics
- Understand how the law of conservation of momentum affects colliding objects
- Explain the parallelogram of forces
- Describe how stability and center of gravity are related

Before or after you have watched the video lessons, take the quizzes and chapter tests to see how well you understand this subject. You can use the printable transcripts that accompany each lesson as an offline study guide. Contact one of our instructors if you have additional questions. These study materials are accessible to you 24 hours a day, seven days a week.

### 1. What is Motion? - Definition & Laws

Motion is the act of moving and plays a huge role in the study of physics. This lesson walks through important terms and the laws of motion that guide the study of motion.

### 2. State of Motion and Velocity

An object's state of motion describes how it is moving. But there are many ways we can describe motion, such as speed and velocity. This motion is relative to other objects around it, such as the earth, the sun, and even other stars in our galaxy.

### 3. Acceleration: Definition, Formula & Examples

This lesson describes the difference between speed, velocity and acceleration. Examples are used to help you understand the concept of acceleration and learn to calculate acceleration with a mathematical formula.

### 4. Force in Physics: Definition & Examples

Physical forces are all around us. Learn the defining characteristics of forces in physics, look at some examples, and test your understanding with a short quiz.

### 5. What is Momentum? - Definition, Equation, Units & Principle

People talk about momentum all the time; now you can discover what that word really means. Then learn about the principle of conservation of momentum and what it has to do with objects colliding.

### 6. Understanding Parallelogram of Forces

To find the resultant of two forces, you can use the parallelogram of forces law. In this lesson, learn about why the parallelogram of forces works and how to apply it.

### 7. Stability & Center of Gravity

Discover what stability means and why center of gravity is so important to understanding it. Then learn about the different states of stability and how to tell the difference between them.

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### Other Chapters

Other chapters within the NDA Exam Preparation & Study Guide course

- About the NDA Exam
- Algebra Concepts
- Advanced Algebra Concepts
- Solving Matrices & Determinants
- Trigonometry Concepts
- Geometry & Linear Equations
- Analytic Geometry
- Functions, Limits & Continuity
- Derivative Rules
- Calculations & Applications of Derivatives
- Integral Calculus
- Differential Equations & Applications
- Scalars & Vectors in Algebra
- Visualizing Statistics
- Probability Concepts in Math
- Grammar and Usage
- Improving Reading Comprehension
- Measurements in Physics
- Basics of Work, Power & Energy
- Understanding Heat Transfer
- Sound Waves
- Light, Mirrors & Lenses
- Magnets
- Electric Currents & Power
- Scientific Technology, Machines & Tools
- The Atom & Structure of Elements
- Chemical Properties of Elements & Substances
- Chemical Symbols, Formulas & Reactions
- Qualities of Living Organisms
- Health Science Basics
- Solar System & Eclipses
- Achievements of Famous Scientists
- Indian History
- Overview of Major World History Events
- World Government Types
- The Earth
- Earth's Oceans, Atmosphere & Climate
- Regional Geography of South Asia
- Modern Day Events in India
- NDA Exam Preparation & Study Guide Flashcards