This question cannot be answered in its current form. Miles per kilometer is not possible as both miles and kilometers are both distance units. In order to measure speed you must have both a distance unit and a time unit. If the question was meant to be "How fast is 500 kilometers per hour in miles per hour?" then the answer is 310.685596 miles per hour as there is 0.621371192 miles per kilometer or 1.609344 kilometer per mile. Likewise, if you're looking for "How fast is 500 miles per hour in kilometers?" then you will arrive at 804.672 kilometers per hour.
About 37.2 MPH
90 kilometers per hour is 55.92 miles per hour.
500 kilometers per hour is 310.69 miles per hour.
Less than 1 mile per hour.
1000 kps = 2,237,000 mph
they are 500 miles per hour!
Answer: 168 km/h = 104.39 mph
180 km/h = 111.85 mph
155 miles per hour
About 500 miles per hour.
500 feet per second = 340.9 mph
one kilometer = 0.6214 miles so for your question 51 kilometers = 51*0.6214 = 31.6 miles