Final answer:
The student's question pertains to understanding motion in a rotating reference frame such as on a merry-go-round, where directional arrows indicate the counterclockwise rotation and the resultant curved path of objects. Observations of arrows and vector addition reveal the rotational directions and effects such as the Coriolis force.
Step-by-step explanation:
The student's question relates to the observation of the behavior of objects in a rotating frame of reference, specifically as seen in the cases of a merry-go-round and the addition of putty to create an angular velocity. Through careful observation, we can determine that the arrows indicating direction provide insight into the rotational motion experienced by objects. For example, when observing the motion on a merry-go-round that rotates counterclockwise, the path of a ball slid towards the edge would curve to the right because of the Coriolis effect, which is what we can deduce from the provided figures. Additionally, when putty is added to a rotating disc at a certain numbered position, the angular velocity and acceleration also have distinct clockwise or counterclockwise directions and can be influenced by the placement of putty. Drawing vectors from head-to-tail in sequence can also help in visualizing motion.