Final answer:
Student A is correct. The average speed of the boat is calculated as distance divided by time, yielding 3 meters per second.
Step-by-step explanation:
The question asks about the average speed of a boat that is pushed and rolls 6 meters in 2 seconds. To find the average speed, you divide the total distance traveled by the total time taken. Using the formula average speed = distance/time, you get 6 meters / 2 seconds = 3 meters per second (m/s). Therefore, Student A is correct in stating that the average speed of the boat is 3m/s.