0.15 m/s^2 0.21 m/s^2 0.36 m/s^2 0.58 m/s^2
I gave my students this multiple choice question: A train travels at a rate of 13 meters per second (m/s). Over the next 60 seconds, the speed of the train increases to speed to 22 m/s. What is the average rate of acceleration of the train?

Only one answer is correct among these 4 choices:
- 0.15 m/s^2
- 0.21 m/s^2
- 0.36 m/s^2
- 0.58 m/s^2

Could you tell me which one is correct?

0.15 m/s^2