$A$ point moves such that its displacement as a function of time is given by $x^3 = t^3 + 1$. Its acceleration as a function of time $t$ will be

  • A
    $\frac{2}{x^5}$
  • B
    $\frac{2t}{x^5}$
  • C
    $\frac{2t}{x^4}$
  • D
    $\frac{2t^2}{x^5}$

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$A$ particle moves in a straight line so that its displacement $x$ at any time $t$ is given by $x^2 = 1 + t^2$. Its acceleration at any time $t$ is $x^{-n}$ where $n = . . . . .$

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