Which is an action/reaction force pair? Check all that apply.Earth pulls on a book, and the book pushes against a shelf.A hockey stick hits a puck, and the puck pushes against the stick. A pencil pushes against a piece of paper, and the paper pushes against the desk.A finger pulls on a rubber band, and the rubber band pushes against the finger.A dog pulls on a leash, and the owner pulls back on the leash.
Answer
A
Earth pulls on a book, and the book pushes against a shelf.
B
A hockey stick hits a puck, and the puck pushes against the stick.
C
A pencil pushes against a piece of paper, and the paper pushes against the desk.
D
A finger pulls on a rubber band, and the rubber band pushes against the finger.
E
A dog pulls on a leash, and the owner pulls back on the leash.
Explanation
An action/reaction pair consists of two equal and opposite forces that two objects exert on each other. The hockey stick pushes on the puck, and the puck pushes back on the stick, so B is a pair. The finger pulls on the rubber band, and the rubber band pulls back on the finger, so D is also a pair. In the other choices, the forces involve different pairs of objects, rather than the same two objects acting on each other.
AI-written and checked against the verified answer.