A one kg block moves towards a light spring with a velocity of $8\, m/s$. When the spring is compressed by $3\, m$, its momentum becomes half of the original momentum. Spring constant of the spring is :-

822-650

  • A

    $18/3\, N/m$

  • B

    $16/3\, N/m$

  • C

    $3\, N/m$

  • D

    $8\, N/m$

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