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what is the velocity of a 1,000 kg cannon that shoots 10 kg bullets at a speed of 380 m/s?

  • pysics - ,

    well, lets assume it is standing still and then shoots one round.
    The total momentum remains zero so
    0 = 1000 v + 10 * 380
    v = -3800/1000
    v = - 3.8 m/s

    The negative sign means the cannon moves backwards if the bullet moves forwards (what else is new?)

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