Final answer:
The provided options do not indicate any objects moving at 2 feet per second. Instead, they specify different velocities in meters per second. Without a correct match in the options, the question may contain an error or misunderstanding.
Step-by-step explanation:
The question asks which objects are moving at a rate of 2 feet per second. To find the correct answer, it's important to consider the information given about the motion of objects and their velocities in different units of measurement. The provided descriptions mention objects accelerating and moving at constant velocities, but we must note the units used are meters per second, not feet per second. Since we are looking for a motion rate of 2 feet per second, we need to recognize that none of the provided options match this rate exactly. However, we can consider converting meters per second to feet per second if necessary. From the information provided, none of the objects are moving at exactly 2 feet per second. The reason for the missing correct answer is unclear, but it may stem from an error in the provided options or a misunderstanding.