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Newton's third law of motion states that the action and reaction forces are equal and opposite and always act on
AThe same single body
BOnly bodies at rest
CTwo different bodies
DOnly bodies of equal mass
Answer & Solution
Correct answer: C. Two different bodies
1. The third law says every action has an equal and opposite reaction.
2. If A pushes B, then B pushes A with an equal but opposite force.
3. Since one force is on B and the other on A, they act on two different bodies.
4. Rule out option D: the law holds for all bodies, not only equal masses.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 1 "Laws of Motion", p.14_
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