90km/h local speed limit: 90 km/hr
Most countries use the Metric System, which uses the measuring units such as meters and grams and adds prefixes like kilo, milli and centi to count orders of magnitude.
25.0 m/s
2.5 * 101 m/s (scientific)
25 m/s (engineering)
In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.
90,007 m/hr
82.0 ft/sec
3,600 secs
1.0 hrs
3.6 * 103 sec(s)
60 min(s)
1 hr(s)
90,007 meter
9 * 106 cm
3.54 * 106 in
295.3 * 103 ft
98.43 * 103 yard
90.01 * 103 m
90.01 km
55.93 mile
48.6 nautical mile