What are the forces involved in the following case?

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The discussion centers on Newton's first law of motion, emphasizing that an object remains in its state of motion unless influenced by external forces. In the example of a game of catch, gravity is identified as one external force acting on the ball, while air friction is also recognized as a contributing external force. The participants confirm that both gravity and air friction play roles in the ball's motion, validating the initial assertion about external forces affecting motion.

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avito009
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Newton's first law of motion is often stated as. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force.

Now for example two people are playing a game of catch. The ball moves in the same direction and then falls down. so this external force must be gravity. But is friction between the air and the ball also involved?. Is friction also the external force? So in such a case two external forces are involved. One gravity and the other friction?
 
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Yes. So?
 
I always share my knowledge on PF. In most cases people add some more knowledge on the subject. Just wanted to check if I am right. Also do you have anything to add to this case?
 

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