3,600 miles per hour.
There are 5280 feet in a mile, and 3600 seconds in an hour. Thus: 22 ft/s = (22/5280)(3600) = 15 mph.
There are 5280 feet in one mile. Therefore, 1 mile per hour is equal to 5280 feet per hour. There are 3600 seconds in one hour. Therefore, 5280 feet per hour is equal to 5280/3600 = 1.46 recurring (that is, 1.46666...) feet per second.
There are 3600 seconds in one hour. Therefore, 32 feet per second is equal to 32 x 3600 = 115200 feet per hour. There are 5280 feet in one mile. Therefore, 115200 feet per hour is equal to 115200/5280 = 21.81 recurring (that is, 21.818181...) miles per hour.
If you go 135 feet in a second, you travel 135*60 feet in a minute:and you would travel 135*60*60 feet in an hour.5280 feet is a mile, so you would travel (135*60*60)/5280 miles per hour(135*60*60)/5280 = 92 mph (rounded)
There are 5280 feet per mile and 3600 seconds per hour. 24(5280/3600) = 35 feet per second, to the justified number of significant digits.
1 mile = 5280 feet 1 hour = 3600 seconds So, 55 mph = 55*5280 feet per hour = 55*5280/3600 feet per second = 80.66... fps
30 mph = 30*5280 feet per hour = 30*5280/3600 feet per second = 44 feet per second (The conversion factor from mph to fps is 22/15)
1 mile = 5280 ft 62.5 feet per second = 62.5 * 60 * 60 = 225000 feet per hour 225000 feet per hour = 225000/5280 = 42.6136 mph
340 feet/second equals 1,224,000 feet per hour or about 232 mph (231.8182).From the calculation (340 x 3600)/5280 feet per mile
15 miles/hour (5280 feet/1 mile)(1 hour/3600 seconds) = 22 feet per second
861 ft/s * 3600 s/hr / 5280 ft/mi = 587.045 mph
45 x 5280 feet / 3600 seconds = 66 feet per second