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SAT Physics Dynamics - Newton's Laws Of Motion

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SAT Physics Dynamics - Newton's Laws Of Motion Sir Isaac Newton deduced three laws of motion to describe the relationships among force, mass, and changes in velocity. Newton’s First Law In his first law, Newton simply generalizes Galileo’s principle of inertia. Essentially, the first law states that objects at rest will remain at rest, and objects in motion will remain at constant velocity unless acted upon by a net unbalanced force. This law is often referred to as the law of inertia. When the word equilibrium is used in physics, the forces acting on an object are balanced (equal and opposite). Equilibrium is a stable condition where the net force is zero, = 0, and an object does not accelerate, a = 0. If the object is not accelerating, it must be experienc­ing one of only two types of equilibrium. Static equilibrium. The object has a constant velocity equal to zero. Dynamic equilibrium. The object has constant velocity not equal to zero. Newton’s first law of motio