Gravitational force: This is the force that pulls the football towards the center of the Earth. It is due to the mass of the football and the mass of the Earth.

Normal force: This is the force that the ground exerts on the football to prevent it from sinking into the ground. It is equal to the gravitational force acting on the football.

Air resistance: This is the force that the air exerts on the football to oppose its motion. It is due to the viscosity of the air and the speed of the football.