The SI base units for length is meter (m) and for time is seconds (s).
The given ratio is [tex]\frac{714 mm}{37 s}[/tex]
[tex]\frac{714 mm}{37 s} = 19.297 mm/s \simeq 19.3 mm/s[/tex]
Converting mm/s to m/s as:
Since, 1 mm/s = 0.001 m/s
So, [tex]19.3 mm/s = 0.0193 m/s [/tex]
Since, zeroes to the left side of the non-zero number are not significant hence, the evaluation of [tex]\frac{714 mm}{37 s}[/tex] to three significant figures and answer in SI units is [tex]0.0193 m/s[/tex].