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A bullet of mass 0.1 kg is fired on a wo...

A bullet of mass 0.1 kg is fired on a wooden block to pierce through it, but it stops after moving a distance of 50 cm into it. If the velocity of bullet before hitting the wood is 10 m/s and it slows down with uniform deceleration, then the magnitude of effective retarding force on the bullet is 'x N.
The value of 'x to the nearest integer is___________

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Knowledge Check

  • A bullet of mass m is fired from a gun of mass M. The recoiling gun compresses a spring of force constant k by a distance d. Then the velocity of the bullet is

    A
    `kdsqrt(M//m)`
    B
    `(d)/(M)sqrt(km)`
    C
    `(d)/(m)sqrt(kM)`
    D
    `(kM)/(m)sqrt(d)`

  • A bullet of mass 0.05 kg moving with a speed of 80m//s enters a wooden block and is stopped after a distance of 0.40 m The average resistive force exerted by the block on the bullet is:

    A
    300 N
    B
    20 N
    C
    400 N
    D
    40 N

  • A bullet of mass A and velocity B is fired into a wooden block of mass C. If the bullet geta embedded in the wooden block.then velocity of wooden block after collision

    A
    ` (A+B)/(AC)`
    B
    ` (A+C)/(B+C)`
    C
    ` (AC)/(B+C)`
    D
    ` (AB)/(A+C)`
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