* Newton's First Law of Motion (Law of Inertia): This law states that 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.
* Moving Objects: If an object is moving, it will continue to move at a constant velocity (speed and direction) unless a force changes its motion. For example, a ball rolling across a smooth floor will keep rolling until friction or another force slows it down.
* Non-Moving Objects: If an object is at rest, it will stay at rest unless a force acts on it. Imagine a book sitting on a table. It stays there because the forces acting on it (gravity and the table's support force) are balanced.
In short, inertia is a fundamental property of all matter that resists changes in motion. It applies equally to objects at rest and objects in motion.
