Newton's Third Law

The Law of Action-Reaction.

Action: The force of the bird on the post. Reaction: The force of the fence post on the bird.

The reaction force is the glove pushing back on the ball with an equal force.

The wall pushes on the skater as the skater pushes on the wall.

The bat hitting the ball is equal to the force of the ball hitting the bat.

For every action, there is an equal and opposite reaction.

When you jump off a small boat, the boat moves backward as you move forward.

An action force is the initial force exerted by one object on another.

A reaction force is the force exerted by the second object back on the first object.

When you push your foot backward against the ground, the ground pushes you forward.