# Exam 3 Physics Numbers 21-25

5 Questions | Total Attempts: 48  Settings  .

• 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. Back to top