1 mile in 45 seconds is 80 mph. There are 60 seconds in a minute and 60 minutes in an hour; 60 * 60 = 3,600 seconds in an hour. 3,600 / 45 seconds = 80. And to cross-check: 80 mph * 5,280 feet in a mile = 422,400 feet per hour / 60 = 7,040 feet per minute / 60 = 117 1/3 feet per second * 45 seconds = 5,280 feet in 45 seconds.
At 60 mph you travel 1 mile per minute. At 80 mph it is 60/80 x 60 seconds = 45 seconds.
Extremely fast: 1 hour = 3600 seconds speed = distance/time = 1 mi / 45 s = 1/45 mi/s = 1/45 mi/s x 3600 s/hr = 3600/45 mi/hr = 80 mph!
66.7 mph
12.121212 seconds
45
80 mph
5.65 miles per hour for one mile.
As speed as
If you run a mile in 4 minutes and 45 seconds you are averaging 12.63 miles per hour.
45 seconds.
There are 60 seconds per minute and 60 minutes per hour; therefore, there are 60 X 60 = 3600 seconds per hour. The stated rate is 1/45 mile per second. 1/45 X 3600 = 80 miles per hour.
In that case, your speed is precisely 1 mile per 80 seconds. If you like, you can transform that expression in order to describe the speed in terms of other units. Examples include: -- 0.75 mile per second -- 45 miles per hour -- 1,080 miles per day -- 120,960 furlongs per fortnight
45 seconds.
45 mph (5280 feet/1 mile)(1 hour/3600 seconds) = 66 feet per second
10
It will take 45 seconds.
45 seconds.