Newton's first law expresses the principle of inertia: the natural behavior of a body is to move in a straight line at constant speed. A body's motion preserves the status quo, but external forces can perturb this. The modern understanding of Newton's first law is that no inertial observer is privileged over any other. Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. Newton’s Second Law : Newton’s Second Law of Motion, formulated by Sir Isaac Newton , states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. The equation F = ma represents this law in math. In this equation, F stands for the force acting on the object, m is the object’s mass, and a is the object’s acceleration. This fundamental principle underpins our understanding of how objects respond to external ... Newton’s second law of motion is proposed to highlight what happens when the net external force acts to accelerate a body. Developed in 1666, the 3 laws of motion of Sir Issac Newton were discovered to observe the object's motion in an inertial reference frame. He found that in motions of an inertial frame where, during the absence of an external force, objects either stay in rest or stay in motion. The second law , in particular, is only restricted to the inertial frame. Newton’s laws of ...
