An object falling through a fluid is observed to have an acceleration given by $a = g - bv$,where $g$ is the gravitational acceleration and $b$ is a constant. After a long time of release,it is observed to fall with a constant speed. The value of this constant speed is:

  • A
    $\frac{g}{b}$
  • B
    $\frac{b}{g}$
  • C
    $bg$
  • D
    $b$

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