State Aristotle's law regarding motion.
(N/A) Aristotle's law of motion states that an external force is required to keep a body in motion. According to this view,if a body is moving,it will come to rest as soon as the external force acting on it is removed. In modern physics,this is understood to be incorrect because it ignores the effect of friction,which is the actual force that brings moving objects to rest on Earth.
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