A 410 g cat is running at 4.1 m/s when it catches a 12 g mouse running toward it at 22 m/s. What is the cat’s speed immediately after catching the mouse?

• A. 1.2 m/s
• B. 3.4 m/s
• C. 6.4 m/s
• D. 7.1 m/s

Answer: (B)