Newton's Third Law - AP Physics 1
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What is the reaction force when a person pushes a shopping cart?
What is the reaction force when a person pushes a shopping cart?
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The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
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What is the reaction force when a person jumps off a boat?
What is the reaction force when a person jumps off a boat?
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The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
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Identify the action-reaction pair when a rower rows a boat.
Identify the action-reaction pair when a rower rows a boat.
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Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
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Which force is greater in an action-reaction pair?
Which force is greater in an action-reaction pair?
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Both forces are equal in magnitude but opposite in direction. Newton's Third Law states forces are always equal in magnitude.
Both forces are equal in magnitude but opposite in direction. Newton's Third Law states forces are always equal in magnitude.
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Identify the reaction force when a ball hits the ground.
Identify the reaction force when a ball hits the ground.
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The ground exerts an equal and opposite force on the ball. Newton's Third Law requires an equal and opposite reaction force.
The ground exerts an equal and opposite force on the ball. Newton's Third Law requires an equal and opposite reaction force.
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What force does the Earth exert on you according to Newton's Third Law?
What force does the Earth exert on you according to Newton's Third Law?
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An equal and opposite force to your gravitational pull on Earth. Gravitational forces are mutual between Earth and you.
An equal and opposite force to your gravitational pull on Earth. Gravitational forces are mutual between Earth and you.
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Identify the force pair when a diver pushes off a diving board.
Identify the force pair when a diver pushes off a diving board.
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Diver exerts force on board; board exerts equal and opposite force on diver. Pushing off creates equal and opposite forces on both objects.
Diver exerts force on board; board exerts equal and opposite force on diver. Pushing off creates equal and opposite forces on both objects.
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What is the reaction force when a person sits on a chair?
What is the reaction force when a person sits on a chair?
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The chair exerts an equal and opposite force upwards on the person. The normal force balances the person's weight downward.
The chair exerts an equal and opposite force upwards on the person. The normal force balances the person's weight downward.
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What is the reaction force when a car tire pushes backward on the road?
What is the reaction force when a car tire pushes backward on the road?
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The road exerts an equal and opposite force forward on the tire. Friction from road provides the forward force on the car.
The road exerts an equal and opposite force forward on the tire. Friction from road provides the forward force on the car.
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What is the reaction force when a person stands on the ground?
What is the reaction force when a person stands on the ground?
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The ground exerts an equal and opposite force upwards on the person. The normal force supports your weight against gravity.
The ground exerts an equal and opposite force upwards on the person. The normal force supports your weight against gravity.
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What is the reaction when a magnet attracts a metal object?
What is the reaction when a magnet attracts a metal object?
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The object exerts an equal and opposite force on the magnet. Magnetic forces are mutual between interacting objects.
The object exerts an equal and opposite force on the magnet. Magnetic forces are mutual between interacting objects.
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When you walk, what is the reaction force according to Newton's Third Law?
When you walk, what is the reaction force according to Newton's Third Law?
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The ground pushes back with an equal and opposite force. Friction from ground propels you forward when walking.
The ground pushes back with an equal and opposite force. Friction from ground propels you forward when walking.
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Identify the action-reaction pair when a person claps their hands.
Identify the action-reaction pair when a person claps their hands.
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Hands exert force on each other and receive equal and opposite forces. Each hand experiences equal and opposite impact forces.
Hands exert force on each other and receive equal and opposite forces. Each hand experiences equal and opposite impact forces.
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What is the reaction force when a hammer hits a nail?
What is the reaction force when a hammer hits a nail?
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The nail exerts an equal and opposite force on the hammer. Impact forces always create equal and opposite reactions.
The nail exerts an equal and opposite force on the hammer. Impact forces always create equal and opposite reactions.
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Identify the action-reaction pair when a balloon releases air.
Identify the action-reaction pair when a balloon releases air.
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Air exerts force on balloon; balloon exerts equal and opposite force on air. Expelled air creates thrust through Newton's Third Law.
Air exerts force on balloon; balloon exerts equal and opposite force on air. Expelled air creates thrust through Newton's Third Law.
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Identify the action-reaction pair when a horse pulls a cart.
Identify the action-reaction pair when a horse pulls a cart.
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Horse exerts force on cart; cart exerts equal and opposite force on horse. Pulling forces create equal and opposite tension forces.
Horse exerts force on cart; cart exerts equal and opposite force on horse. Pulling forces create equal and opposite tension forces.
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What is the reaction force when a person leans on a wall?
What is the reaction force when a person leans on a wall?
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The wall exerts an equal and opposite force on the person. All contact forces have equal and opposite reaction forces.
The wall exerts an equal and opposite force on the person. All contact forces have equal and opposite reaction forces.
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In which direction does the reaction force act compared to the action force?
In which direction does the reaction force act compared to the action force?
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Opposite direction. Action and reaction forces are always opposite in direction.
Opposite direction. Action and reaction forces are always opposite in direction.
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Describe the force interaction when two ice skaters push off each other.
Describe the force interaction when two ice skaters push off each other.
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Each skater exerts an equal and opposite force on the other. Newton's Third Law applies to all force interactions.
Each skater exerts an equal and opposite force on the other. Newton's Third Law applies to all force interactions.
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What is the reaction force when a baseball is caught by a glove?
What is the reaction force when a baseball is caught by a glove?
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The glove exerts an equal and opposite force on the baseball. Catching involves impact forces in opposite directions.
The glove exerts an equal and opposite force on the baseball. Catching involves impact forces in opposite directions.
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When a swimmer pushes against the water, what is the reaction force?
When a swimmer pushes against the water, what is the reaction force?
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The water pushes back against the swimmer. The reaction force from water propels the swimmer forward.
The water pushes back against the swimmer. The reaction force from water propels the swimmer forward.
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What is the reaction force when a crane lifts a load upwards?
What is the reaction force when a crane lifts a load upwards?
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The load exerts an equal and opposite force downwards on the crane. Lifting forces have equal and opposite weight reactions.
The load exerts an equal and opposite force downwards on the crane. Lifting forces have equal and opposite weight reactions.
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What is the reaction force when a person pushes a shopping cart?
What is the reaction force when a person pushes a shopping cart?
Tap to reveal answer
The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
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What is the reaction force when a person jumps off a boat?
What is the reaction force when a person jumps off a boat?
Tap to reveal answer
The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
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Identify the action-reaction pair when a rower rows a boat.
Identify the action-reaction pair when a rower rows a boat.
Tap to reveal answer
Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
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What will happen if you push a wall with a force of 10 N?
What will happen if you push a wall with a force of 10 N?
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The wall pushes back with a force of 10 N. Newton's Third Law guarantees an equal and opposite reaction force.
The wall pushes back with a force of 10 N. Newton's Third Law guarantees an equal and opposite reaction force.
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Which law explains the propulsion of a rocket in space?
Which law explains the propulsion of a rocket in space?
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Newton's Third Law of Motion. Rockets work by expelling mass and experiencing reaction forces.
Newton's Third Law of Motion. Rockets work by expelling mass and experiencing reaction forces.
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State the reaction force when a bird flaps its wings downward.
State the reaction force when a bird flaps its wings downward.
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The air exerts an equal and opposite force upward on the bird. The reaction force from air provides lift for flight.
The air exerts an equal and opposite force upward on the bird. The reaction force from air provides lift for flight.
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What is the reaction force when a bullet is fired from a gun?
What is the reaction force when a bullet is fired from a gun?
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The gun exerts an equal and opposite force on the bullet. The recoil force causes the gun to kick backward.
The gun exerts an equal and opposite force on the bullet. The recoil force causes the gun to kick backward.
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When a dog pulls on a leash, what is the reaction force?
When a dog pulls on a leash, what is the reaction force?
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The leash exerts an equal and opposite force on the dog. Tension forces always occur in equal and opposite pairs.
The leash exerts an equal and opposite force on the dog. Tension forces always occur in equal and opposite pairs.
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