Salma studies historical data published by the United States Census Bureau to determine if there has been an increase in the population of African Americans over the last decade. This study is an example of a(n) . naturalistic observation psychobiography field experiment archival research

This study is an example of archival research.

Explanation:

Archival research is a type of investigation in which archives, such as manuscripts, records and other types of materials are used as the primary source of information.

In this case, we can see that Salma is carrying out this type of study because is focusing on the study of data published by the United States Census Bureau (records) as her primary source of information.

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

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.