Very fast. At that speed you are covering more than 1/4 of a mile every second.
You must make a formula and convert the units to solve this problem. 65 miles per hour is a speed. 850 miles is a length. If you are travelling at 65 miles per hour, then you will have traveled 65 for every hour. At this point, it becomes a simple division problem. 850 miles covered at 65 miles per hour is 850 miles/65 miles/hour. 850/65 = ~13. The miles on the top and bottom of the fraction cancel out, and you are left with hours. So the time taken will be ~13 hours.
850 km/hr = 0.146712643 miles per second
I'll let you figure it out. Multiply 850 by 60. Multiply that by 60. Sorry but you should already know how to do that. This should have said divide by, not multiply by! There are 3600 seconds in an hour. A speed of 850 miles per hour is 850/3600 miles per seconds = 0.23611 miles per second, which is just slightly less than one quarter mile per second.
It is81.25 miles per hour
Answer: 850 km/h = 528.165 mph
about 53 miles per hour
32.3 miles per hour.
About 25.3 miles per hour.
90 kilometers per hour is 55.92 miles per hour.
0.17 miles per hour = 0.274 kilometers per hour.
Approximately 621 statute miles per hour or about 1,005 kilometers per hour.
In an hour you can move 3 miles. Not so fast.