1. As a bullet travels through the air, it slows down due to air resistance. How does the bullet's momentum change as a result?

2. How can a small force produce a large change in momentum?

3. A baseball pitcher's first pitch is a fastball, moving at high speed. The pitcher's second pitchwith the same ball is a changeup, moving more slowly. Which pitch is harder for the catcher to stop? Explain your answer in terms of momentum