Force and motion deeply connect in nature. In other words, force is the cause of motion. If something is moving, we will say that some force is acting on it or some force must have acted on it which is producing this motion.
If a woman is walking, and hence in motion, there must be some force acting on her which is making her move. So you ask, what is this force? It is the muscular force of her body. In simpler terms, force is neither a push nor a pull.
It is “any interaction that, when unopposed, will change the motion of an object”. By the definition itself, it becomes clear that force affects the state of motion of an object. Moreover, motion is the change in position with respect to time.
Naturally, we can describe motion as a change in speed, or change in direction. The first person to discover the relation between both was Sir Isaac Newton. He concluded that force can accelerate the body, decelerate the body and it can change the direction of the moving body.
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