Newton's Third Law is perhaps the most famous of the three laws because of its wide range of applicable situations in the real world and in the mathematical world. To introduce Newton's Third Law, let us begin with a small interactive demonstration. Right this instant, stand up, find the nearest wall, and run as fast as you can towards it. Go ahead... I'll wait. OUCH, right? Yet another thing we take for granted explained by our good friend Sir Isaac Newton. As you are applying ice to your head, you probably aren't pondering the reason why you didn't merely pass through the wall, but maybe you should be.
Newton's Third Law, simply put, states that "every action has an equal and opposite reaction." In terms of forces[the theme of this website] , this law means that for every force applied by an object, there is a force equal in magnitude and opposite in direction that acts on that object. Remember: these are two seperate forces, which act upon two seperate objects, and so they do not cancel each other out.
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