Answer: Foot
Step-by-step explanation:
The action force in this scenario is exerted by the foot. When you kick a soccer ball, your foot applies a force to the ball. According to Newton's third law of motion, for every action, there is an equal but opposite reaction. This means that as your foot applies a force to the ball, the ball exerts an equal but opposite force back onto your foot.
In this case, the action force is the force applied by your foot onto the ball. This force causes the ball to move forward, and it is the force that initiates the motion of the ball. The reaction force, on the other hand, is the force applied by the ball back onto your foot. This reaction force is what you feel when you kick the ball and your foot experiences a backward force.
To summarize, the action force is exerted by your foot when you kick the soccer ball. This force causes the ball to move forward, while the ball exerts an equal but opposite force back onto your foot.
Hope this helps.