distance = rate * time
1.5 mi = r * 13 minutes
r = 1.5/13 mi/minute * 60 minutes/hour = 90/13 mph ~= 6.923 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
speed = distance/time 15 minutes = 1/4 hour 1.5/1/4 = 6 mph
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.
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).
51.5 minutes.
To run three miles in 16 minutes 59 seconds your pace would have to be 10.6 miles per hour.
28 miles in 1 hour 38 minutes equates to an average speed of 17.14 miles per hour.
2.58 miles / 61 minutes * 60 minutes/hour ~= 2.538 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.