There are 3600 seconds per hour, and 5280 feet per mile. You can use those two numbers to convert from feet per second to miles per hour. Just make sure the units are right when you are finished.
1,398.76 miles.
There are 5280 feet in one mile. Therefore, travelling 24 miles per hour is the same as travelling 24 x 5280 = 126720 feet per hour. There are 3600 seconds in one hour. Therefore, travelling 126720 feet per hour is equivalent to travelling 126720/3600 = 35.2 feet per second.
Very fast. It is equal to 18,000 miles per hour.
30 miles per hour = 13.4112 meters per second
63 miles per second = 365,000 kilometers per hour.
Aircraft and ships at sea often use the nautical mile which is about 15% longer than the statute (road) mile. An aircraft travelling at 600 knots (nautical miles per hour) is travelling at about 690 statute miles per hour.
About 186,000 miles per second
That depends on how fast you are travelling. If you are travelling at one mile an hour, then it would take you 6 miles. If you were travelling at 50 miles per hour, it would be 300 miles. So without specifying the speed you are travelling at, the question cannot be answered.
Travelling 6 feet per second equates to travelling 6 x 3600 = 21600 feet in one hour. Dividing this by the number of feet in one mile, 5280, gives 21600/5280 = 4.09 recurring (that is, 4.090909..) miles per hour.
Your question's wording doesn't quite make sense but I think I know the intent. The first airplane takes off at time 0 (T=0) It flies for .5 hours at a speed of 500mph and goes 250 miles The second aircraft takes off at time .5 (T=.5) The second aircraft is flying 100mph faster than aircraft 1 At T=1.5 the first aircraft is 750 miles downrange, the second aircraft is 600 miles down range (notice that it has gained 100 miles in one hour which is the speed difference) At T=2.5 the first aircraft is 1250 miles downrange, the second aircraft is 1200 miles downrange At T=3 the first aircraft is 1500 miles downrange, the second aircraft is also 1500 miles downrange The answer is that the second aircraft will catch the first one 2.5 hours after the second aircraft took off. If you want to graph this scenario you can use the below functions Aircraft 1 = f(x) = 500X Aircraft 2 = f(x) = 600X - 300 The intersection of these functions is where the second aircraft overtakes the first one.
80 miles per hour equates to 117.3 feet per second.
1 mph = 0.000277 miles per second.
As a 'light-year'
1,398.76 miles.
350 mph = 0.098 miles per second.
900 mph is equal to 0.250575 miles per second.
There are 5280 feet in one mile. Therefore, travelling 24 miles per hour is the same as travelling 24 x 5280 = 126720 feet per hour. There are 3600 seconds in one hour. Therefore, travelling 126720 feet per hour is equivalent to travelling 126720/3600 = 35.2 feet per second.