Final answer:
The confusion arises from mistaking velocity (m/s) for acceleration (m/s^2). The units represent different physical quantities, with 3 m/s being a speed and 9 m/s^2 being an acceleration, which indicates a change in velocity over time.
Step-by-step explanation:
The question relates to the concept of acceleration in physics and involves understanding the difference between velocity and acceleration units. The velocity of a jogger is given as 3 m/s, which is a measure of speed. However, acceleration, which describes the rate of change of velocity, is measured in meters per second squared (m/s2). The value 9 m/s2 represents the rate at which the jogger's velocity is increasing every second, not the velocity itself. The student might have confused the unit of velocity (m/s) with that of acceleration (m/s2) if they are referencing the two interchangeably or mistakingly converting one into the other. Therefore, (3 m/s) cannot become (9 m/s2) as they represent different physical quantities: one is a constant speed, while the other is a rate of velocity change.