When a soccer ball is resting on the ground, it experiences balanced forces. The primary forces include the gravitational force pulling the ball down towards the ground and the normal force exerted by the ground pushing up against the ball. These forces are equal in magnitude but opposite in direction, resulting in a net force of zero, which keeps the ball at rest.
When a soccer ball is kicked, unbalanced forces come into play. The force exerted by the player's foot during the kick is greater than the opposing forces—like friction from the ground and air resistance acting on the ball. This unbalanced force causes the ball to accelerate, moving through the air or rolling on the ground. As the ball travels, gravity continues to act on it, pulling it downwards, while air resistance acts against its motion. If there's no other force acting on the ball after the kick, it will eventually slow down and stop due to the unbalanced forces of friction and air resistance.