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Newton’s 3rd Law of Motion

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Presentation on theme: "Newton’s 3rd Law of Motion"— Presentation transcript:

1 Newton’s 3rd Law of Motion

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4 Newton’s 3rd Law of Motion
Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force back on the first object. “You can’t touch without being touched!”

5 Action Force, Reaction Force
Action and reaction forces are a pair. They may be equal in size but opposite in direction. This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.

6 Action Force, Reaction Force
You constantly use action-reaction force pairs as you move about. When you jump, you push down on the ground. The ground then pushes up on you. It is this upward force that pushes you into the air.

7 Action Force, Reaction Force
When you walk forward, you push backward on the ground. Your shoe pushes the Earth backwards, and the Earth pushes your shoe forward. Earth has so much mass compared to you that it does not move noticeably when you push it. If you step on something that has less mass than you do, like a skateboard, you can see it being pushed back.

8 Action Force, Reaction Force
The thrust of a race car pushing it forward is the action force and the drag of a race car pulling it back is the reaction force. The gravitational force is the action force pulling the car downward, and the reaction force is the ground pushing back up on the race car.

9 In your own words, describe Newton’s 3rd Law of Motion.
Question 1 In your own words, describe Newton’s 3rd Law of Motion.

10 In your own words, describe Newton’s 3rd Law of Motion.
Question 1 In your own words, describe Newton’s 3rd Law of Motion. Answer Newton’s 3rd Law of Motion states that for every action there is an equal and opposite reaction.


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