Why is a football player's motion barely affected by catching a ball?

1. Momentum combines mass and velocity, so a light fast object can still carry little. 2. The momentum of the player is much greater than the momentum of the football. 3. As a result, the player's motion is only slightly affected if he catches the ball. 4. The ball does carry momentum; it is simply small in comparison. _Source: OpenStax College Physics for AP(R) Courses 2e (CC BY 4.0), Ch 8 'Linear Momentum and Collisions', sections 8.1-8.7_