Essay
Consider a small comet nucleus,whose diameter is 1 km and mass is 5 × 1011 kg,hitting the Earth head-on,traveling at a speed of 1,000 m/s.How many times larger or smaller is the comet's kinetic energy compared to that of a typical train pulling 20 boxcars whose total mass is 2 × 106 kg and speed is 25 m/s?
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Kinetic energy is equal to 1/2...View Answer
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Correct Answer:
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