Final answer:
A baseball bat is an example of a third-class lever, which requires a large effort force that causes a smaller force to act over a large distance.
Step-by-step explanation:
A baseball bat is an example of a third-class lever. Third-class levers require a large effort force to cause a smaller force to act over a large distance. In a baseball bat, the effort force (applied by the batter) is smaller and is applied over a large distance, while the resistance force (the impact with the ball) is smaller and is applied over a short distance.