<h2>Summary</h2>
<ul>
<li><strong>Newton's third law of motion</strong> represents a basic symmetry in nature. It states: Whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that the first body exerts.</li>
<li>A <strong>thrust</strong> is a reaction force that pushes a body forward in response to a backward force. Rockets, airplanes, and cars are pushed forward by a thrust reaction force.</li>
</ul>
<h2>Glossary</h2>
<h3>Newton's third law of motion</h3>
<p>whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that the first body exerts</p>
<h3>thrust</h3>
<p>a reaction force that pushes a body forward in response to a backward force; rockets, airplanes, and cars are pushed forward by a thrust reaction force</p>
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Summary and Main Ideas

Physics is a science discipline concerned with the nature and properties of matter and energy. Physics topics include mechanics, heat, light and radiation, sound, electricity, magnetism, the structure of atoms, and so on.

Physics

Discover the development of the force concept, explore Newton&#8217;s first, second, and third laws of motion, and learn about problem-solving strategies and further applications in this tutorial on dynamics and the four basic forces.


Force and Newton's Laws of Motion

Development of Force Concept

Extended Topic: The Four Basic Forces—An Introduction

Further Applications of Newton’s Laws of Motion

Newton’s First Law of Motion: Inertia

Newton’s Second Law of Motion: Concept of a System

Newton’s Third Law of Motion: Symmetry in Forces

Normal; Tension; and Other Examples of Forces

Problem-Solving Strategies

Summary and Main Ideas

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