Answer and Explanation:
When a player kicks a football, several forces are exerted on the ball:
Force of the Kick: This is the primary force exerted by the player's foot on the ball. It is the force that propels the ball in the direction of the kick. The magnitude and direction of this force determine the ball's speed and trajectory.
Frictional Force: This force acts between the player's foot and the surface of the ball. Friction affects how the ball moves, including how much spin or swerve is imparted on it.
Normal Force: This is the force exerted by the surface of the ball in response to the force of the kick. It acts perpendicular to the surface of the ball and balances the component of the kick force.
Gravitational Force: The ball is also acted upon by gravity, which pulls it downward. This force affects the vertical component of the ball's motion, influencing its trajectory and how it arcs through the air.
Air Resistance: As the ball moves through the air, it encounters air resistance or drag, which opposes its motion and affects its speed and direction.
Reaction Force: According to Newton's Third Law of Motion, the ball exerts an equal and opposite force back on the player's foot. This is the reaction force to the force exerted by the player's kick.
In summary, the force exerted on the ball when a player kicks it includes the force of the kick, frictional force, normal force, gravitational force, and air resistance.
