9. A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (assume a uniform acceleration). a. 1.2x105 m/s? b. 1.9x103 m/s² c. 2.1x105 m/s² d. 1.62x105 m/s² a O b O d ООО
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