Convert 72.0 ft/s to km/h using dimensional analysis. For full credit, use one long chain of conversion factors and report your answer with the correct number of significant figures.
Given: 1 ft = 12 in, 1 in = 2.54 cm, 60 min = 1 h, 60 s = 1 min
(You should know the relationship between meters and centimeters as well as between meters and
kilometers.)