In the world of Physics, Sir Isaac Newton is the man who pioneered classical physics with his laws of motion. In these laws, the first law is also known as the Law of Inertia . Law of inertia is the most important and renowned one. In this piece of article, let us discuss the first law of inertia in detail. Before discussing the law of inertia , let us know the Inertia Definition . Inertia is defined as a property of matter by which it remains at the state of rest or in uniform motion in the ... Inertia is the lack of activity or interest, or the physical force that keeps something in the same position or moving in the same direction. Learn more about the meaning , usage and examples of inertia in different contexts and domains. What is Inertia ? In this blog, we will explore Newton’s First Law of Motion, different types of inertia , how mass affects it, and the role of friction. Let’s dive in! Have you ever wondered why a marble ball keeps rolling until something stops it? Or why do you feel like a jerk when a bus or car suddenly stops? This happens because of inertia ! Inertia is a property of all objects and is related to motion. What is Inertia: Meaning , Definition , Importance & FAQs Inertia is a fundamental concept in physics that embodies the resistance of an object to changes in its state of motion.