The $x$ and $y$ coordinates of the particle at any time are $x = 5t - 2t^2$ and $y = 10t$ respectively, where $x$ and $y$ are in metres and $t$ in seconds. The acceleration of the particle at $t = 2\, s$ is......$m/sec^2$

  • [NEET 2017]
  • A

    $-4$

  • B

    $-5$

  • C

    $-8$

  • D

    $0$

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