In 5 sentences, summarize the balanced forces that are present when a soccer ball is resting on the ground, and the unbalanced forces that are present when a soccer ball is kicked and moves through the air or rolls on the ground.
When a soccer ball is resting on the ground, the forces acting on it are balanced. The force of gravity pulling the ball downwards is equal to the force exerted by the ground in the opposite direction. These balanced forces keep the ball stationary.
When a soccer ball is kicked and moves through the air, unbalanced forces come into play. The force exerted by the kicker's foot on the ball is greater than the force of air resistance. This causes the ball to accelerate and move in the direction of the kick.
Similarly, when the ball rolls on the ground, there are unbalanced forces at work. The force of the kick or the force applied by the player changes the ball's velocity, causing it to accelerate. Friction between the ball and the ground opposes the ball's motion but is overwhelmed by the kick's force.