Inertia

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Inertia

Inertia (/ɪˈnɜːrʃə/; from Latin iners, meaning 'idle, sluggish') is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion.

Etymology

The term "inertia" comes from the Latin word iners, meaning 'idle, sluggish'. It was first introduced in the laws of physics by Sir Isaac Newton in his Philosophiæ Naturalis Principia Mathematica.

Definition

Inertia is a fundamental concept in physics. It is the property of an object that resists changes in its state of motion. The principle of inertia is one of the fundamental laws of classical mechanics that are used to describe the motion of objects and how they are affected by applied forces.

Types of Inertia

There are three types of inertia:

1. Inertia of Rest: This is the inability of a body to change by itself its state of rest.

2. Inertia of Motion: This is the inability of a body to change by itself its state of motion.

3. Inertia of Direction: This is the inability of a body to change by itself its direction of motion.

Related Terms

  • Mass: Inertia is directly proportional to the mass of the object. The greater the mass of the object, the greater its inertia, and the greater the force required to change its motion.
  • Force: Force is required to change the motion of an object due to its inertia.

See Also

External links

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