About 5.5 miles per hour.
2.58 miles / 61 minutes * 60 minutes/hour ~= 2.538 mph
40.2 miles per hour.
You are running at about nine (9) miles per hour.
800 meters in 2 minutes is 14.9 miles per hour.
18
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.
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).
The runner would be running at 6.67 miles per hour. This is answered by dividing 60 (minutes in an hour) by 9 (minutes it took for one mile). You are basically saying that the runner will run a mile every 9 minutes, so how many '9 minutes' (each mile ran) are in an hour.
28 miles in 1 hour 38 minutes equates to an average speed of 17.14 miles per hour.
51.5 minutes.