A car accelerates from rest to $u\,m / s$. The energy spent in this process is $E\,J$. The energy required to accelerate the car from $u\,m / s$ to $2u\,m / s$ is $nE\,J$. The value of $n$ is ..............

  • [JEE MAIN 2023]
  • A

    $6$

  • B

    $3$

  • C

    $9$

  • D

    $12$

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  • [AIPMT 1999]

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