The average force necessary to stop a bullet of mass $20\, g$ moving with a speed of $250\, m/s$,as it penetrates into the wood for a distance of $12\, cm$ is

  • A
    $2.2 \times 10^3\, N$
  • B
    $3.2 \times 10^3\, N$
  • C
    $4.2 \times 10^3\, N$
  • D
    $5.2 \times 10^3\, N$

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