By Jessica A.
3rd law
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"For every action, there is an equal and opposite reaction."
 
 

This law is all about a pair of forces. These two forces are called the action and reaction forces. These two forces are equal in size, meaning the size of the force on one object equals the size of the force on the other. Another thing to remember about the action
and reaction forces is that the direction of these two forces is opposite. For example, if one force is moving upwards, then the other will be moving downwards with an equal force.
 
This is a picture of me (middle) and two of my friends in England. this is an example of Newtons 3'rd law because of the forces between our feet and the ground. the force at which i exert on the ground, is equal and opposite to the force that is exerting itself upon me.
 

An example of the use of these two forces would be giving a high-five to a friend. If you hit your friend’s hand with a force of 5N to the left, then evidently your friend would also be pushing back on your hand with the same force of 5N, but a rightwards direction.
Another example of the action and reaction pairs would be if you imagine yourself driving in your car on your way to the mall. The wheels on your car will be spinning backwards as you drive, therefore, the road would be pushing the wheels forward. Another thing to
remember is that the force on the road and the force on the wheels would be exactly the same as one another.
   

Even a simple thing such as sitting down on a chair is an example of Newton’s 3rd law. You are exerting a downwards force upon the chair, and the chair is exerting an upwards force which is equal in size upon you.

Say you are trying to push a boulder up a hill. The force at which you are exerting upon the boulder will be equal in size to the force that the boulder is pushing back on you. You are exerting a rightwards force upon the boulder, and the boulder is exerting a
leftwards force  (equal in size) upon you.

 
“For every action, there is an equal and opposite reaction.” Therefore, for every object touching another, there must be an equal and opposite reaction. If you imagine you are bowling, when the bowling ball hits a pin, the opposite forces acting upon them will be equal in size.