Question

question 21 1 pts as a ball falls, the action force is the earths pull on the ball. the reaction force is the acceleration of the ball. air resistance acting against the ball. balls pull on earth. none of the above question 22 1 pts you cannot exert a force on a wall unless the wall simultaneously exerts the same amount of force on you. unless you put your mind to it. if the wall resists.

Explanation:

For Question 21, according to Newton's third - law of motion, for every action, there is an equal and opposite reaction. When the Earth pulls on the ball (action force), the ball pulls on the Earth (reaction force). For Question 22, also based on Newton's third - law, forces always occur in pairs. When you exert a force on a wall, the wall simultaneously exerts an equal and opposite force on you.

Answer:

Question 21: C. ball's pull on Earth
Question 22: A. unless the wall simultaneously exerts the same amount of force on you.