Newton’s 3 rd Law of Motion. Newton’s 3 rd Law. For every action there is an equal and opposite reaction. Examples. Hammer and Nail:
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Newton’s 3rdLaw of Motion
For every action there is an equal and opposite reaction
ALL FORCES COME IN PAIRS
They are known as: “action-reaction pairs”
Object A applies an “action” force on Object B while at the same time Object B has a “reaction” force on Object A of equal magnitude but opposite direction.
Think, pair, share (Think about it yourself, talk it over with a partner, and then write your ideas in your notes):
Use Newton’s 3rd Law of Motion to explain to a classmate why it hurts when you punch a wall.
YES! Well, in a way…
A truck driving down the road hits a mosquito. The mosquito is smashed and the truck continues driving.
Which of the two forces is greater: The mosquito on the truck or the truck on the mosquito? Why?
(Hint: really think about Newton’s 3rd Law here and maybe even think back to Newton’s 2nd Law to answer “why?”)
Use your Peer-to-Peer Network toask a classmate (that has already completed this question) if your answer matches theirs