Question: Which of the following has the least momentum?

  Options: 
 A. a 0.5 kg mass with a 1000 m/s velocity
 B. a 1 kg mass with a 100 m/s velocity
 C. a 10 kg mass with an 11 m/s velocity
 D. a 100 kg mass with a 2 m/s velocity 
Answer: B