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Physics

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A bullet with mass 0.40 kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the reoil of the gun is?

Do I have to 0.40 and 5.0 an then divide that by 400?

  • Physics -

    No. The bullet's momentum (0.40)x400 equals the recoiling gun's momentum (in the opposite direction.

    That makes the recoil velocity 0.40*400/5.0

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