Moment of Inertia Experiment in Space by NASA

The concept of inertia refers to an object's resistance to changes in its state of motion. This property is described by Newton's First Law of Motion, which states that an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity, unless acted upon by an external force. Inertia is directly related to an object's mass; the greater the mass, the greater the inertia. This principle is crucial in understanding how objects behave in response to forces and why they tend to maintain their current state of motion or rest