5 N 10 N 20 N 30 N
I gave my students this multiple choice question: An object accelerates at 3 meters per second^2 when a 10-newton (N) force is applied to it. Which force would cause this object to accelerate at 6 meters per second^2?

Only one answer is correct among these 4 choices:
- 5 N
- 10 N
- 20 N
- 30 N

Could you tell me which one is correct?

20 N