Asked about: Speed translation

How do i calculate miles per hour at 400 feet per second?


Alister Doyle, Math makes my head hurt.

User avatar for Alister Doyle

You first need to multiply 400 by 60 and then multiply the result by 60 again. This will give you the value of feet per hour since there are 60 seconds in a minute and 60 minutes in an hour. Then you just need to divide by 5280 (which is the number of feet in a mile) to give you the value of miles per hour.

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