2.3 Newton’s Third Law

• Action and reaction forces have opposite directions
• Action and reaction forces always act on different objects
• For every action force, there is an equal and opposite reaction force.

  True
• What happens when you push against a wall according to Newton's Third Law?

  The wall pushes back
• Match the characteristic of action-reaction forces with its description:

  Magnitude ↔️ Forces have the same magnitude

  Direction ↔️ Forces are opposite in direction

  Objects ↔️ Forces act on different objects
• Action and reaction forces are equal in magnitude but opposite in direction
• For every action force, there is an equal and opposite reaction force.
• What is an example of an action-reaction pair when a rocket launches?

  Rocket pushes gas downward, gas pushes rocket upward
• What is the magnitude of the reaction force compared to the action force in a force pair?

  Equal
• When a person pushes against a wall, the wall exerts an equal and opposite reaction force on the person.


  True
• Newton's Third Law ensures forces are mutually exerted with equal magnitude and opposite direction.
• Reaction forces are delayed after action forces.

  False
• The action force and reaction force have equal magnitudes.
• The reaction force is exerted by the second object back on the first
• An action force acts on the second object, while the reaction force acts on the first
• Action-reaction pairs are described by Newton's Third Law
• When a person walks, the ground pushes back on them with a reaction
• Action and reaction forces have equal magnitude
• Newton's Third Law involves action-reaction force pairs
• Action and reaction forces are simultaneous
• Action-reaction forces act on different objects.


  True
• Action and reaction forces act on the same object.

  False
• Action-reaction force pairs always involve two interacting objects.


  True
• Steps to apply Newton's Third Law in problem solving

  1️⃣ Identify the action-reaction force pairs

  2️⃣ Verify that the forces have equal magnitude

  3️⃣ Confirm that the forces have opposite directions

  4️⃣ Ensure the forces act on different objects
• What does Newton's Third Law describe in contrast to Newton's Second Law?

  Action-reaction force pairs
• Action-reaction forces act on different objects and do not cancel each other out.
• Action and reaction forces act on the same object.

  False
• What is the definition of an action force?

  Force exerted by one object
• What is the direction of an action force relative to the reaction force?

  Opposite
• When you kick a ball, what is the reaction force acting on your foot?

  Equal and opposite force
• In the example of a rocket launching, what is the action force?

  Rocket pushes gas downward
• What is the first step in applying Newton's Third Law to problem-solving?

  Identify action-reaction pairs
• Action and reaction forces have the same magnitude.

  True
• Match the action with the reaction force in the given examples:

  Person pushes against a wall ↔️ Wall pushes back

  Rocket expels gas ↔️ Gas propels rocket forward
• Newton's Third Law states that for every action force, there is an equal and opposite reaction force.reaction
• The action and reaction forces have opposite directions.

  True
• Action-reaction pairs act on the same object.

  False
• Reaction forces act on the same object as action forces.

  False
• Newton's Third Law states that for every action force, there is an equal and opposite reaction
• Action-reaction pairs act on the same object.

  False