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The potential energy of a catapult was completely converted into kinetic energy by releasing a small stone with a mass of 20 grams. the velocity of the stone when it reached the target was 15.0 meters/second. what was the value of the kinetic energy of the stone when it reached the target? 2.05 joules 2.25 joules 3.20 joules 4.43 joules
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