Bugatti Veyron top speed: 435 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.
1,128 m/s
1.13 * 103 m/s (scientific)
1.13 * 103 m/s (engineering)
In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.
4,060,001 m/hr
3,700 ft/sec
604,800 secs
1.0 wks
604.8 * 103 sec(s)
10.08 * 103 min(s)
168 hr(s)
7 day(s)
1 wk(s)
682,080,135 meter
682.08 * 103 km
423.83 * 103 mile
368.29 * 103 nautical mile