I only know of it being , per second .
Like KPH of KM per h , is Kilometer per hour .
KPM or KM per S , Kilometer per second .
If you mean what is 90km/h converted to km/s then the answer is 0.025km/s (or 25m/s).
1.5km per seconds
0.51 km per second = 1,140.84 mph
51,000 meters per minute = 0.85 km per second. 0.85 km/s * 60 s/min * 1000 m/km = 51,000 meters per minute.
120 km per hour = 33.33 meters per second.
6 m/s is equivalent to 21.6 km/h. This conversion can be done by multiplying the speed in m/s by 3.6 to get the speed in km/h.
The maximum speed of a vehicle is 60 km. per hr
to make cm to km, divide by 100000. = km/s to convert from per second to per hour, multiply by 360 overall: *360/100000
kilometers per hour
U can convert km/h into m/s by multiplying it by 5/18. Here 18km/h = 5m/s
1h = 3600s 1km/h x 1h/3600s = 0.00027778km/s
750 ft/s = 228.6 m/s = 0.2286 km/s = 822.96 km/h