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math

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a helicopter blade spins 775 times in 3 minutes. find the rate of the revolutions per second.

  • math -

    divide 775 by 3

  • math -

    Enough, Jessica!!

    The question asks for the revolutions per second, not per minute.

    3 * 60 = 180 seconds in three minutes.

    775/180 = ______ revolutions per second.

  • math -

    there are 180 seconds in3 minutes

    so the number of revolutions/sec = 775/180
    = appr 4.3 rotations/sec

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