What is the acceleration of a trains emergency stop from 80 km/h in 8.30 s?

After the experience with great britain having a monarchy, the united states realized that everyone needed to have a voice in the government. the fact that americans had no voice was the main reason for the war. thus, they created a democracy, where the people voted for their representatives and the government ruled with the consent of the people.

The answer would be c 0.02