Final answer:
The question refers to average acceleration in Physics but lacks essential details like change in velocity and time period. Therefore, it's not possible to accurately calculate the average acceleration without additional information.
Step-by-step explanation:
The student is asking about average acceleration, which is a Physics concept usually taught in High School. To calculate average acceleration, we need to know the change in velocity and the time period over which the change occurs. The formula for average acceleration, a, is given by Δv / Δt, where Δv is the change in velocity, and Δt is the time interval.
From the provided options and context, the question does not give specific velocity values or a time frame, so we cannot calculate the average acceleration directly. However, based on practice problems mentioned, we can infer how to approach similar problems. For instance, if a velocity increases from 0 to 20 m/s in 10 s, the average acceleration would be calculated as (20 m/s - 0 m/s) / 10 s, which is 2 m/s².
In the case of this student's question, more information is needed to calculate the average acceleration. To properly answer this question, one would need to know the initial and final velocities and the time over which this change occurs.