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The law of inertia states that an object remains in either a state of rest or motion unless an external force acts on it. Newton’s First Law: Inertia An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force. Newton’s first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This tendency to resist changes in a state of motion is inertia. If all the external forces cancel each other out, then there is ... Newton’s laws of motion are three statements describing the physical relations between the forces acting on a body and the motion of the body. Isaac Newton developed his three laws in order to explain why planetary orbits are ellipses rather than circles, but it turned out that he explained much more. What is Newton’s first law of motion. Learn its definition, significance, and formula, along with everyday real-life examples, applications, and diagrams.
