SOLUTION: Use unit multipliers to convert 400 yards per second to miles per hour. (Please show work when you do it step by step, I have trouble with these kind of problems.)

Question 1069984: Use unit multipliers to convert 400 yards per second to miles per hour.
(Please show work when you do it step by step, I have trouble with these kind of problems.)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Use unit multipliers to convert 400 yards per second to miles per hour.
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Change to yards/hour
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Include the units in the calculations.
400 yd/sec * 3600 sec/hr = 1440000 yd/hr - notice the seconds cancel.
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1440000 yd/hr * 1 mile/1760 yd = 1440000/1760 yd*mile/hr*yd
The yards cancel
=~ 818.2 mi/hr
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Including units makes it obvious and avoids multiplying when you should divide and v.v.

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