What is Newton’s 3rd Law of Motion?

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Presentation transcript:

What is Newton’s 3rd Law of Motion? For every action, there is an EQUAL and OPPOSITE reaction Forces always exist in pairs What does equal mean? What does opposite mean?

Basically… For every action, there is a reaction that is EQUAL in magnitude and OPPOSITE in direction

Let’s see an example… ACTION: Rocket Gases push DOWN on air. REACTION: Air pushes UP on rocket.

Another example of Newton’s 3rd Law ACTION: Wings push DOWN on the air. REACTION: Air pushes UP on wings.

Another example of Newton’s 3rd Law ACTION: Fins push BACK on water REACTION: Water pushes Forward on fins.

What is an action-reaction pair? Action – reaction pair = A pair of simultaneous EQUAL but OPPOSITE forces resulting from the interaction of two objects If the same force is applied to both the hammer and the nail, why does only the nail accelerate?