Final answer:
The situation of a football not moving until someone kicks it is an example of Newton's First Law of Motion or the law of inertia. This law states that an object remains in its state of rest or motion unless an external force acts on it. This applies to all objects, not just a football.
Step-by-step explanation:
The situation described in the question refers to Newton's First Law of Motion, also known as the law of inertia. This law states that an object at rest remains at rest and an object in motion remains in motion at a constant speed and in a straight line unless acted upon by an external force. Hence, a football on the ground will not move until someone kicks it, or in other words, exerts an external force on it.
For example, consider a stationary football. It remains at rest due to its inertia. When a player kicks the ball, they apply an external force, causing the football's motion to change. If no other forces act upon it (like gravity or air resistance), the football would continue to move with the speed and direction given by that force indefinitely.
Therefore, the application of Newton's First Law is not only limited to football but can provide an understanding of the motion or rest of any object under the influence of external forces.
Learn more about Newton's First Law