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Homework Help: Solving problem very important

  1. Oct 10, 2007 #1
    please help me to solve this problem thank you
    the largest-caliber antiaircraft gun operated by the german air force during wold was the 12-8-cm flak 40 .this weapon fired a 25.8-kg shell with a muzzle speed of 880 m/s. what propulsive force was necessary to attain the muzzle speed within the 6.00m barrel ? ( assume the sheel moves horizantally with constant acceleration and neglect friction)
     
  2. jcsd
  3. Oct 11, 2007 #2

    learningphysics

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    Homework Helper

    Find the acceleration using kinematics... then get the force using F = ma.
     
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