NNewton’s third law: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.  In simpler terms, whenever objects “A” and “B” interact with each other, they will exert a force upon each other.  The force that they exert will be equal and opposite to each other.
         You will see Newton’s third law all the time in your every day life.  An example of this law is when you sit in your chair—a simple task.  The chair exerts an upward force on your body and your body exerts a force onto the chair when you sit down.  In this interaction, there are two forces- action and reaction.  This is the subject of his third law.

	Action Force: The swimmer's arms are exerting a force backwards onto the water. Reaction Force: The water exerts a foward force on the swimmer's arms.
	Action Force: The elephant exerts a downward force on the ground. Reaction Force: The ground exerts an upward force onto the elephant.
	Action Force: The girl leans backwards onto the wall. Reaction: The wall pushes foward onto her.
	Action Force: The sailboat exerts a downward force onto the water. Reaction Force: The water exerts an upward force onto the sailboat.