speed = distance/time
15 minutes = 1/4 hour
1.5/1/4 = 6 mph
1.5 miles in 12 minutes = 7.5 miles/hour = 12.07kilometers/hour, or more
50 miles in 10 minutes is the same as 300 miles per hour, since 50 miles/10 minutes * 60 minutes/1 hour = 300 miles per hour
Here is the explanation: 2 miles/16 minutes X 60 minutes/hour = 7.5 miles per hour
(19.76 miles)/[(42.23 minutes)/(60 minutes/hour) = 28.08 miles/hour, to the justified number of significant digits.
To do the run in 13.049 minutes your pace must be at least 7 mph.
Using a time goal of 17.5 minutes, you would need to maintain an average speed of at least 6.86 (7) miles per hour.
It depends on the speed. At 10 miles per hour 100 miles is 10 hours. At 100 miles an hour it is 1 hour. At 1000 miles an hour it is 0.1 hour (= 6 minutes).
28 miles in 1 hour 38 minutes equates to an average speed of 17.14 miles per hour.
51.5 minutes.
2.58 miles / 61 minutes * 60 minutes/hour ~= 2.538 mph
About 1 hour and 43 minutes.
That is about 4.3 miles per hour.