explain how newtons law of inertia describes the motion of objects.

Answer:

Newton's first - law of inertia 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. This law describes the natural tendency of objects to resist changes in their state of motion. For example, a book placed on a table remains at rest because there is no net force acting on it to change its state. A moving car will continue to move with a constant velocity if there were no frictional forces from the road and air resistance, and no forces from the engine or brakes.

Brief Explanations:

States object's motion tendency. Resting objects stay still, moving ones keep moving without unbalanced forces. Examples illustrate the concept.