10 kg 1,800 kg 2,200 kg 400,000 kg
I gave my students this multiple choice question: What is the mass of an asteroid with a speed of 200 m/s and a momentum of 2,000 kg x m/s?

Only one answer is correct among these 4 choices:
- 10 kg
- 1,800 kg
- 2,200 kg
- 400,000 kg

Could you tell me which one is correct?

10 kg