Exam 3 Physics Numbers 21-25

5 Questions | Total Attempts: 48

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Exam 3 Physics Numbers 21-25

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Questions and Answers
  • 1. 
    21. Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
    • A. 

      A. net external forces

    • B. 

      B. gravitational forces

    • C. 

      C. field forces

    • D. 

      D. action-reaction pairs

  • 2. 
    22. Newton’s third law of motion involves the interactions of
    • A. 

      A. one object and one force

    • B. 

      A. two objects and one force.

    • C. 

      C. one object and two forces

    • D. 

      D. two objects and two forces.

  • 3. 
    23. A hammer drives a nail into a piece of wood. Identify an action-reaction pair in this situation.
    • A. 

      A. The nail exerts a force on the hammer; the hammer exerts a force on the wood.

    • B. 

      B. The hammer exerts a force on the nail; the wood exerts a force on the nail.

    • C. 

      C. The hammer exerts a force on the nail; the nail exerts a force on the hammer.

    • D. 

      D. The hammer exerts a force on the nail; the hammer exerts a force on the wood.

  • 4. 
    24.  In an action-reaction pair, the
    • A. 

      A. action force is exerted first.

    • B. 

      B. action force and the reaction force are equal in magnitude and act in the same direction.

    • C. 

      C. action force and the reaction force are contact forces only.

    • D. 

      D. action force and the reaction force act on two different objects.

  • 5. 
    25. A batter strikes a baseball with a bat. Identify an action-reaction pair and describe the forces exerted by each.
    • A. 

      A. The batter exerts a force on the bat; the ball exerts a force on the bat

    • B. 

      B. The batter exerts a force on the bat; the bat exerts a force on the batter.

    • C. 

      C. The bat exerts a force on the batter; the bat exerts a force on the ball.

    • D. 

      D. The ball exerts a force on the bat; the bat exerts a force on the batter.

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