7. Action and reaction forces can cancel each other out. True False 8. If a ball hits a wall with a force of 50 N, the wall exerts a 50 N force back on the ball. True False

7. **False**. Action and reaction forces do not cancel each other out because they act on *different* objects. For example, if you push on a wall (action), the wall pushes back on you (reaction). The force on the wall might move the wall if it's weak enough. The reaction force on *you* is what stops your hand from going through the wall.<br /><br />8. **True**. Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.<br />