"Students are expected to spend a lot of time on their studies, but students are also increasingly expected to perform some sort of volunteer work and to socialize in their residence halls. The result is"

a. role strain.

Explanation:

ROLE STRAIN is a phenomenon that occurs when one is having difficulty meeting the responsibilities of a SPECIFIC role in their life which in this case is that of a student.

The student is required to study hard as well as perform volunteer work as a student meaning the responsibilities might conflict under the SPECIFIC role of student.

This is different from ROLE CONFLICT where MULTIPLE roles conflict each other such as an employee student having the job's responsibilities conflicting with the responsibilities required of a student.

we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds