1. Which exerts more force, the Earth pulling on the moon or the moon pulling on the
Earth? Explain.

2. When a heavy football player and a light one run into each other, which player hits
the other with more force? Explain. Which one is hurt more by the collision? Explain.

1. The more gravitational force it exerts. So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive.

2. The heavy player hits the lighter player with more force. The lighter player gets hurt more after the collision. Explanation: A heavy player will hit a light player with more force and eventually, the lighter player will get hurt the more after the collision. Force is a function of mass and acceleration of a body; Force = mass x acceleration We can see that the more the mass and acceleration of a body, the more the force they can exert. It is obvious that the mass of the heavier player is more than that of light player. Therefore, it exerts more force on the other one.