When university students in the United States walk into a classroom on the first day, they observe that there is a person standing in the front of the classroom with a folder open on a podium and a stack of papers on the desk. Based on their experience, they decide that this must be the instructor. One student approaches the person and asks, "Are you the instructor?" The student's question is an example of .

Experience and Perception of teacher in his mind.

Explanation:

When university students in the United States walk into a classroom on the first day, they observe that there is a person standing in the front of the classroom with a folder open on a podium and a stack of papers on the desk. Based on their experience, they decide that this must be the instructor. One student approaches the person and asks, "Are you the instructor?"

The student's question is an example of his Experience and Perception.

i got you covered.. i will do my best

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.