What is the comparison from qin dynasty and han dynasty

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

Researchers have found that it takes to view a mental image that is larger or covers more distance than a smaller or more compact one.

According to this chart, which country is likely to have the most economic freedom with regards to entrepreneurship?