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.
Here's a breakdown:
* Inertia: This is the tendency of an object to resist changes in its motion. The more massive an object, the more inertia it has.
* Rest: An object that is not moving will remain stationary unless a force acts on it.
* Motion: An object that is moving will continue moving at a constant speed and direction unless a force acts on it.
* Unbalanced Force: A force that is not countered by an equal and opposite force.
Examples:
* A book lying on a table will stay there unless someone picks it up.
* A ball rolling across the floor will continue rolling until friction or something else stops it.
* A car traveling at a constant speed on a straight road will continue traveling at that speed and direction until the driver applies the brakes or the car encounters resistance like a curve in the road.
In essence, Newton's First Law states that objects don't spontaneously change their motion. They need a force to do so.
