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    Anielka's Avatar
    Anielka Posts: 1, Reputation: 1
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    #1

    Sep 19, 2009, 11:54 PM
    In which riffle is the acceleration of the bullet larger?
    The muzzle velocity of a gun is the velocity of the bullet when it leaves the barrel. Th muzzle velocity of 1 rifle with a short barrel is greater than the muzzle velocity of another rifle that has a longer barrel. In which riffle is the acceleration of the bullet larger?

    Don't know where to start... :confused:
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Sep 20, 2009, 05:43 AM

    The bullets start at a velocity of zero (before being fired). They accelerate to a given velocity over a distance. Assuming that the time to leave the barrels is more or less the same, to accelerate to a higher velocity requires a higher acceleration than to accelerate to the lower velocity.
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