Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. Whenever one object exerts a force on a second object, the second object exerts a force of equal magnitude but opposite direction on the first object. This law helps explain phenomena such as a baseball glove pushing back on a baseball with equal force to the force with which the baseball pushes on the glove. Momentum is defined as an object's mass multiplied by its velocity, and is conserved in a closed system, meaning any loss of momentum by one object will result in a gain of equal momentum by another object due to action-reaction force pairs.

1. Newton’s Third Law of Motion AKA: Action-Reaction Law

2. Newton’s Third Law of Motion Whenever one object exerts a force on a second object, The second object exerts an equal force and opposite force on the first object

3. Newton’s Third Law of Motion The Law: The two forces are called Action force Reaction force To Identify the paired forces look at: who is pushing on who and in what direction

4. Baseball pushes glove leftwards. Bowling ball pushes pin leftwards. Enclosed air particles push balloon wall outwards.

5. Momentum Is the product of an objects mass and velocity Momentum = Mass X Velocity Units = Kg m/s * An object has large momentum if the product of its mass and velocity is large Which would have more momentum? GB or BB

6. Conservation of Momentum Loss of momentum in one object is gained in another object. No momentum is lost in a Closed System What is conserved when two objects collide in a closed system ? Gained Newtonian Demonstrator Lost

7. Foldable Example: Draw & Color Picture showing action & reaction pair State: Who is pushing on who & in What direction & Color