Final answer:
In a hypothetical situation with no friction or air resistance, a ball kicked across the ground will continue to move indefinitely according to Newton's First Law of Motion.
Step-by-step explanation:
If you kick a ball across the ground and assume that there is no friction or air resistance, the ball would continue to move indefinitely. In physics, this is explained by Newton's First Law of Motion, which states that an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced external force. Since there's no friction or air resistance to act as that force, the ball wouldn't stop and would keep on moving. This phenomenon can be seen in the nearly frictionless environment of space, where objects can move continuously without slowing down. However, on Earth, friction is a force that always acts on moving objects, eventually bringing them to a halt.