Final answer:
The correct option is Deceleration.
The ceiling fan experiences deceleration as it slows uniformly from 0.90 rev/s to a stop over a period of 2.0 minutes. Deceleration is the reduction in the speed of an object over time, which is constant in this case.
Step-by-step explanation:
When a ceiling fan rotating at 0.90 rev/s is turned off and comes to a stop uniformly over 2.0 minutes, it experiences a deceleration. Deceleration is a type of acceleration that occurs when an object slows down. Given that the fan comes to a stop uniformly, we can infer that it has a constant deceleration over this period. Unlike acceleration, which refers to an increase in velocity, or constant velocity, which indicates no change in speed or direction, deceleration specifically denotes a decrease in the speed of an object.
To illustrate this concept in another context, let's examine an example provided in a related physics problem: a gyroscope that slows from an initial rate of 32.0 rad/s at a deceleration rate of 0.700 rad/s². This problem also exemplifies an object experiencing deceleration until it comes to rest. This consistent slowing down can be quantitatively described using kinematic equations to determine the duration and extent of the gyroscope's rotation before it stops.