All flashcards
Flashcard 1: What is the reaction force when a person pushes a shopping cart?
Answer: The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
Flashcard 2: What is the reaction force when a person jumps off a boat?
Answer: The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
Flashcard 3: Identify the action-reaction pair when a rower rows a boat.
Answer: Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
Flashcard 4: Which force is greater in an action-reaction pair?
Answer: Both forces are equal in magnitude but opposite in direction. Newton's Third Law states forces are always equal in magnitude.
Flashcard 5: Identify the reaction force when a ball hits the ground.
Answer: The ground exerts an equal and opposite force on the ball. Newton's Third Law requires an equal and opposite reaction force.
Flashcard 6: What force does the Earth exert on you according to Newton's Third Law?
Answer: An equal and opposite force to your gravitational pull on Earth. Gravitational forces are mutual between Earth and you.
Flashcard 7: Identify the force pair when a diver pushes off a diving board.
Answer: Diver exerts force on board; board exerts equal and opposite force on diver. Pushing off creates equal and opposite forces on both objects.
Flashcard 8: What is the reaction force when a person sits on a chair?
Answer: The chair exerts an equal and opposite force upwards on the person. The normal force balances the person's weight downward.
Flashcard 9: What is the reaction force when a car tire pushes backward on the road?
Answer: The road exerts an equal and opposite force forward on the tire. Friction from road provides the forward force on the car.
Flashcard 10: What is the reaction force when a person stands on the ground?
Answer: The ground exerts an equal and opposite force upwards on the person. The normal force supports your weight against gravity.
Flashcard 11: What is the reaction when a magnet attracts a metal object?
Answer: The object exerts an equal and opposite force on the magnet. Magnetic forces are mutual between interacting objects.
Flashcard 12: When you walk, what is the reaction force according to Newton's Third Law?
Answer: The ground pushes back with an equal and opposite force. Friction from ground propels you forward when walking.
Flashcard 13: Identify the action-reaction pair when a person claps their hands.
Answer: Hands exert force on each other and receive equal and opposite forces. Each hand experiences equal and opposite impact forces.
Flashcard 14: What is the reaction force when a hammer hits a nail?
Answer: The nail exerts an equal and opposite force on the hammer. Impact forces always create equal and opposite reactions.
Flashcard 15: Identify the action-reaction pair when a balloon releases air.
Answer: Air exerts force on balloon; balloon exerts equal and opposite force on air. Expelled air creates thrust through Newton's Third Law.
Flashcard 16: Identify the action-reaction pair when a horse pulls a cart.
Answer: Horse exerts force on cart; cart exerts equal and opposite force on horse. Pulling forces create equal and opposite tension forces.
Flashcard 17: What is the reaction force when a person leans on a wall?
Answer: The wall exerts an equal and opposite force on the person. All contact forces have equal and opposite reaction forces.
Flashcard 18: In which direction does the reaction force act compared to the action force?
Answer: Opposite direction. Action and reaction forces are always opposite in direction.
Flashcard 19: Describe the force interaction when two ice skaters push off each other.
Answer: Each skater exerts an equal and opposite force on the other. Newton's Third Law applies to all force interactions.
Flashcard 20: What is the reaction force when a baseball is caught by a glove?
Answer: The glove exerts an equal and opposite force on the baseball. Catching involves impact forces in opposite directions.
Flashcard 21: When a swimmer pushes against the water, what is the reaction force?
Answer: The water pushes back against the swimmer. The reaction force from water propels the swimmer forward.
Flashcard 22: What is the reaction force when a crane lifts a load upwards?
Answer: The load exerts an equal and opposite force downwards on the crane. Lifting forces have equal and opposite weight reactions.
Flashcard 23: What is the reaction force when a person pushes a shopping cart?
Answer: The cart exerts an equal and opposite force on the person. All applied forces have equal and opposite reactions.
Flashcard 24: What is the reaction force when a person jumps off a boat?
Answer: The boat exerts an equal and opposite force on the person. Jumping creates equal and opposite forces on both objects.
Flashcard 25: Identify the action-reaction pair when a rower rows a boat.
Answer: Oar exerts force on water; water exerts equal and opposite force on oar. Rowing uses action-reaction forces against water for propulsion.
Flashcard 26: What will happen if you push a wall with a force of 10 N?
Answer: The wall pushes back with a force of 10 N. Newton's Third Law guarantees an equal and opposite reaction force.
Flashcard 27: Which law explains the propulsion of a rocket in space?
Answer: Newton's Third Law of Motion. Rockets work by expelling mass and experiencing reaction forces.
Flashcard 28: State the reaction force when a bird flaps its wings downward.
Answer: The air exerts an equal and opposite force upward on the bird. The reaction force from air provides lift for flight.
Flashcard 29: What is the reaction force when a bullet is fired from a gun?
Answer: The gun exerts an equal and opposite force on the bullet. The recoil force causes the gun to kick backward.
Flashcard 30: When a dog pulls on a leash, what is the reaction force?
Answer: The leash exerts an equal and opposite force on the dog. Tension forces always occur in equal and opposite pairs.