a skateboarder throws a ball away from himself. if the action force is the boy pushing on the ball, what is…

Brief Explanations:

According to Newton's third - law of motion, for every action, there is an equal and opposite reaction. When the boy pushes on the ball (action force), the ball exerts an equal and opposite force on the boy (reaction force). Since the boy is on a skateboard and there is little friction, the boy will move in the opposite direction of the ball's motion.

Answer:

The reaction force is the ball pushing on the boy. The boy on the skateboard will move in the opposite direction to the ball's motion.