Newton's Third Law: Action/Reaction Forces

Front

What is Newton's Third Law of Motion?

Back

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

Front

Define action-reaction force pair.

Back

A pair of forces that are equal in magnitude and opposite in direction, acting on two different objects.

Front

Give an example of an action-reaction force pair in everyday life.

Back

When you sit in a chair, your body exerts a downward force on the chair (action), and the chair exerts an upward force on your body (reaction).

Front

What happens when a cannon fires a cannonball?

Back

The cannon exerts a forward force on the cannonball (action), and the cannonball exerts an equal and opposite force back on the cannon (reaction).

Front

Explain the concept of inertia in relation to Newton's Third Law.

Back

Inertia is the tendency of an object to resist changes in its state of motion. It relates to action-reaction forces as the reaction force can change the motion of an object.

Front

What is the reaction force when a swimmer pushes water backwards?

Back

The water pushes the swimmer forward.

Front

How does Newton's Third Law apply to walking?

Back

When you walk, your foot pushes backward against the ground (action), and the ground pushes your foot forward (reaction).

Front

What is the significance of action-reaction forces in sports?

Back

They explain how athletes can move and change direction by exerting forces against surfaces.

Front

Describe the action-reaction forces involved when a person jumps off a diving board.

Back

The person pushes down on the board (action), and the board pushes the person upward (reaction).

Front

What is the reaction force when a hammer strikes a nail?

Back

The nail pushes back on the hammer.