12 hours and about 53 minutes (52.5 )
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Eighty. That is what "miles per hour" means. It means how many miles you will go in one hour, if you keep going at that speed.
80mph = 80 miles/hour If you drive for one hour at 80 miles/hour, you will travel 80 miles.
1030
1730
1520640000ft ie. 80mph = 422400fft/h 1hr = 3600s 422400x3600= 1520640000ft