-1 m/s^2 -6 m/s^2 3 m/s^2 9 m/s^2
I gave my students this multiple choice question: A bicycle is traveling at 3 meters per second (m/s). The rider applies the brakes and stops the bicycle in 3 seconds. What is the average rate of acceleration of the bicycle during this time?

Only one answer is correct among these 4 choices:
- -1 m/s^2
- -6 m/s^2
- 3 m/s^2
- 9 m/s^2

Could you tell me which one is correct?

-1 m/s^2