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Forces are interactions between objects that can cause a change in their motion or state of rest. According to Newton's laws of motion, forces are the result of interactions between two objects. Here's an explanation:
Newton's Third Law:
Action and Reaction Pairs:
Contact and Action-at-a-Distance Forces:
Force Diagrams:
Examples:
Consider a book resting on a table. The force of gravity pulls the book downward, while the table exerts an equal and opposite force upward, supporting the book. The interaction between the book and the table involves the gravitational force and the normal force.
In a car moving forward, the force exerted by the engine propels the car in one direction. Simultaneously, there is a resistive force due to factors like air resistance and friction, which can act in the opposite direction.
Understanding forces as interactions between objects is fundamental in physics and helps explain various phenomena, including the motion of objects, the behavior of fluids, and the interactions at the atomic and molecular levels. Newton's laws provide a comprehensive framework for describing and quantifying these interactions.
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