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physics

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When a cannon fires a cannonball, the cannon will recoil backward because the
a) energy of the cannonball and the cannon is conserved
b) momentum of the cannonball and cannon is conserved
c)energy of the cannon is greater than the energy of the cannonball
d) momentum of the cannon is greater than the energy of the cannonball

wouldn't the correct answer be d)?

  • physics -

    What does the law of conservation of momentum say?

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