The relation between the displacement $x$ (in metre) and the time $t$ (in second) of a particle is $t = 2x^2 + 3x$. If the displacement of the particle is $25 \ cm$ from the origin $(x = 0)$, then the acceleration of the particle is:

  • A
    $+\frac{1}{16} \ ms^{-2}$
  • B
    $-\frac{1}{16} \ ms^{-2}$
  • C
    $+\frac{1}{8} \ ms^{-2}$
  • D
    $-\frac{1}{8} \ ms^{-2}$

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$Assertion$ : Retardation is directly opposite to the velocity.
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