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Assertion (A): According to Newton's third law sum of action and reaction is not equal to zero Reason (R) : The forces action and reaction acts on different bodies.

1. A and R are correct and R is the correct explanation of
2. A and R are correct and R is not the correct explanation A
3. \( A \) is true and \( R \) is false
4. A is false and R is true

Correct answer: A is false and R is true

Solution

The assertion is false because action and reaction are equal in magnitude and opposite in direction, so their vector sum is zero. The reason is true: they act on different bodies, which is why they do not cancel each other on a single free-body diagram.

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