1 furlong = 220 yards
1 yard = 36 inches
So 10 furlongs = 79200 inches.
1 fortnight = 14 days
1 day = 24 hours
1 hour = 60 minutes
So 1 fortnight = 20160 minutes
So 1 furlong/fortnight = 79200/20160 inches/minute
3.9285714... inches/minute
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1 furlong = 201.168 metres. 1 fortnight = 20,160 minutes So multiply furlongs per fortnight by 201.168/20160 = 0.00998 to convert to metres per minute. That is near enough 0.01 so just divide by 100.
-- to convert the feet to inches, multiply by 12-- to convert the minute to second, divide by 60-- combining these operations, take (feet per minute) and multiply by (12/60) = 0.2
10 m per minute = 393.7008 inches per minute = 393.7008/60 inches per second = 6.5617 inches per second.
An arc-minute is 1/60 of a degree. It is not a measure of length, so you can't convert it to inches.
I multiply it by 36 as there are 36 inches in each yard to get inches per minute and divide by 60 as there are 60 seconds in each minute to get inches per second.