What is the best explanation of Newton’s laws?

Newton ' s laws are a set of three physical laws that describe the relationship between a body and the forces acting upon it , and its motion in response to those forces . The three laws are : \n \n 1 . Newton ' s First Law of Mot ion ( also known as the law of in ert ia ): An object at rest stays at rest , an object in motion stays in motion with the same speed and in the same direction unless acted upon by an un bal anced force . \n 2 . Newton ' s Second Law of Mot ion ( also known as the law of acceleration ): The acceleration of an object is directly proportional to the net force acting on it and in vers ely proportional to its mass . \n 3 . Newton ' s Third Law of Mot ion ( also known as the action - re action principle ): For every action , there is an equal and opposite reaction . This means that if object A ex ert s a force on object B , object B will ex ert an equal and opposite force on object A . \n \n Th ese laws are fundamental principles in classical mechan ics and are still widely used today in the study of physics and engineering . They provide a framework for understanding the behavior of objects and the forces that affect them , and have been instrument al in the development of many techn ologies and scientific adv anc ements . </s>