(Answered) A horizontal rifle is fired at a bulls-eye the muzzle speed

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A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 648 m/s. The barrel is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.0257 m below the center. What is the horizontal distance between the end of the rifle and the bull's-eye?

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