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.
Chat with our AI personalities
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
Well, there are 5280 feet in a mile and 3600 seconds in a hour. So, 5280 feet times 45 miles equals 237600 feet. Then you divide 237600 feet by 3600 seconds, to get 66 feet per second.