Here's a breakdown:
* Inertia: A fundamental property of matter that describes its resistance to changes in motion. This means it takes a force to start an object moving, to stop it from moving, or to change its direction.
* Mass: A measure of an object's inertia. The more massive an object, the greater its inertia.
* Newton's First Law of Motion (Law of Inertia): An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Examples:
* A heavy box is harder to push than a light one because it has more inertia.
* A car takes longer to stop than a bicycle because it has more inertia.
* A spinning top continues to spin because of its inertia.
