4 m/s^2 15 m/s^2 25 m/s^2 100 m/s^2
I gave my students this multiple choice question: A 20-N force acts on a 5-kg object at rest. How fast will the object accelerate on a frictionless surface?

Only one answer is correct among these 4 choices:
- 4 m/s^2
- 15 m/s^2
- 25 m/s^2
- 100 m/s^2

Could you tell me which one is correct?

4 m/s^2