4.2 seconds is 0.0011667 hours.
There are 151200 seconds in 42 hours.
18 hours, 37 minutes, 42 seconds = 67,062 seconds.
18 hours, 37 minutes, 42 seconds =67,062 seconds1,117.7 minutes18.6283 hours
6 hours 42 minutes is 24,120 seconds.
7 hours, 12 minutes, 42 seconds
7542 =125 minutes and 42 seconds 125 minutes = 2 hours and 5 minutes therefore 7542 seconds = 2 hours 5 minutes and 42 seconds.
2 hours = 2*60 = 120 minutesSo 2 hours 7 minutes = 120 + 7 = 127 minutes.127 minutes = 127*60 = 7620 secondsThen2 hours 7 minutes and 42 seconds = 7620 + 42 = 7662 seconds
1 hour = 3,600 seconds 4 hours = (4 x 3,600) = 14,400 seconds 1 minute = 60 seconds 42 minutes = (42 x 60) = 2,520 seconds Altogether: (14,400 + 2,520) = 16,920 seconds I'm guessing you probably could have done that on your own.
1 / 42 mph = 0.02381 hours per mile0.02381 hours per mile x 3600 sec. per hour = 85.7143 seconds per mile.
42 miles = 221760 feet 3 hours = 10800 seconds 42 miles in 3 hours = 221760/10800 = 20.533 feet pe second
Multiply the minutes by 60. Then add the 42 seconds.
10 minutes forty three seconds.