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Inertia is the natural tendency of objects in motion to stay in motion and objects at rest to stay at rest, unless a force causes its speed or direction to change. It is one of the fundamental principles in classical physics, and described by Isaac Newton in his first law of motion (also known as The Principle of Inertia). [1]
Inertia, property of a body by virtue of which it opposes any agency that attempts to put it in motion or, if it is moving, to change the magnitude or direction of its velocity. It is a passive property and does not enable a body to do anything except oppose such active agents as forces and torques.
- The Editors of Encyclopaedia Britannica
Inertia is the tendency for an object at rest to remain at rest, or for a moving object to remain in motion in a straight line with constant speed. This key property of objects was first described by Galileo.
A ball unthrown, sitting on the ground, would never move. Simply put, physical objects will resist a change in their state of motion. This is called inertia.
Jul 22, 2024 · Law of inertia, postulate in physics that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. This law is also the first of Isaac Newton’s three laws of motion.
- The Editors of Encyclopaedia Britannica
Apr 18, 2021 · Inertia is the tendency of matter to resist change in Velocity. It is an inherent property of matter; the inertia of an object is directly proportional to its Mass and can in fact be used to define mass. Newton's First Law of Motion states that the velocity of an object does not change unless there is an unbalanced force acting on it. This is a ...
Feb 20, 2022 · The property of a body to remain at rest or to remain in motion with constant velocity is called inertia. Newton’s first law is often called the law of inertia . As we know from experience, some objects have more inertia than others.
