Question

According to Newton's third Law of Motion, action and reaction are equal and opposite. The resultant force is not zero because

• A. they act at different times.
• B. they act on different bodies.
• C. their lines of action are different.
• D. they act on the same bodies.

Answer 1

The correct option is B they act on different bodies.

According to Newton's third law of motion:
If two bodies are in equilibrium, the force exerted by a body on the other body will be same as the force exerted by the latter on first one and that will be equal in magnitude and opposite in direction.
So, force will not cancel out as it acts on different bodies.