How fast is 90km/hour?
486330
It's the same as 56 mph, if that's a better frame of reference or the slow speed or cars on the freeway.
962545
9 hours, 55 minutes, 29.685 seconds at a rotational velocity of 45,300 km/h (28,152 mph)
302444
sound-330m/s in air medium\nlight-299,297km/s
577594
12.66 mph\n\nor 12.65558195 to be (more) exact!
797399
velocity=107,300 km/h (or if you prefer 67,062 miles per hour)
847424
d= v .t\n> d = 50 km/hr (18 min)\n>d = 50 km/60 min (18min)\nd= 50 km (18)/60\nd =900 km/60\nd = 15 km >>the distance travelled\n\nIf you walk at an average of 3 miles per hour (approximately 4.8 km/hr) at a distance of 15 km:\nt= d/v\n=15 km/4.8 km/hr\nt = 3.125 hrs or (3 hours and 7.5 minutes)>>the time you need to walk on 15 km at the speed of 4.8 km/hr.♥
407005
I'd say 17000-19000 miles per hour.\n\nIts at a inclined geo-stationary orbit probably.
26755
186,000 miles a second vs 220 some odd miles per second?  yeah, it is\n\nedit- \nok, to the person below, yes, I meant per hour, and was lowballing it... \n\nspeed of sound at sea level = 340.29 m / s
661447
The difference in rates is 1 km/hr. So if they are moving in the same direction, the faster walker will be 5 km ahead at the end of 5 hours.\n\nThe sum of the distances traveled per hour is 11 km. So at the end of 5 hours of travel in opposite directions, they will be 55 km apart.
370194
its 225 mph or 362 kmph
1026445
Use 1 hour = 3600 seconds, and 1 km = 1000 m.\n\n(18/5) km/hour * (1 hour/ 3600 s) * (1000m/1km)=\nsome number from your calculator.\nPhysical dimension will be meters per second
231616
in a flat stable position it is broadly 120 miles per hour (takes about 10 seconds to get to that).  Head down (max track) you are nearer 200 mph =8-)
357783
Ninety-Three million miles.
349230
in english it's 186,000 miles per second
836047
1. v = d/t\nt = d/v\nt = (3 900 km) / (299 792 (kilometers per second)) = 13.0090196 milliseconds\n\n(150 000 000 km) / (299 792 (kilometers per second)) = 8.33911512 minutes\n\n (444 000 000 000 km) / (299 792 (kilometers per second)) = 17.1415144 days = 411.396346 hours\n\n\n(10.34 hours) * 299 792 (kilometers per second) = 1.11594574 × 10^13 meters
225964
Depends where on Earth you are standing.  At the equator, it's just over 1000 miles per hour.  At either pole, it's virtually zero.
746505
Probably under 100pds...Depends on your height also...