Newton's Third Law: Action-Reaction Pairs

Steps:

• Recall Newton's third law: every action force has an equal and opposite reaction force.
• Identify force types: action and reaction are always the same type (e.g., both contact or both gravitational).
• Determine objects: action force acts on one object, reaction on a different object.
• Match to options: same type on different objects fits choice C.

Why C is correct:

• Newton's third law defines the pair as equal/opposite forces of the same type acting on two interacting objects.

Why the others are wrong:

• A: Forces are same type, not different.
• B: Forces act on different objects, not same.
• D: Forces act on different objects, not same.

Final answer: C