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What is true about the existence of force?

  1. It exists in isolation

  2. It exists only in pairs

  3. It exists in one direction

  4. It is independent of motion

The correct answer is: It exists only in pairs

Force is fundamentally a concept that describes an interaction between objects, and according to Newton's Third Law, every action has an equal and opposite reaction. This principle highlights that forces always occur in pairs; for every force exerted by one object on another, there is a corresponding force exerted back on the first object. This pairing illustrates that force cannot exist in isolation, as any force experienced is the result of an interaction between two entities. Understanding this interdependence is crucial, as it emphasizes that forces are linked to the interactions of objects rather than existing independently or singularly.