Math

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To convert miles per hour to feet per second, which conversion factor would not be used?

a. 1 hr/60 min
b. 1 min/60 sec
c. 5280 ft/1 mi
d. 1 mi/5280 ft

  • Algebra -

    To convert miles per hour to feet per second, which conversion factor would not be used?

    a. 1 hr/60 min
    b. 1 min/60 sec
    c. 5280 ft/1 mi
    d. 1 mi/5280 ft

  • Math -

    mi/hr * 1hr/60min * 1min/60sec * 5280ft/mi

    Note that the units all cancel out, leaving ft/sec

    Actually all of the factors will work, if you divide by 1mi/5280ft.
    However, since one usually wants to multiply, I'd say (d) would not be used.

  • Math -

    yubfr

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