Consider a Small Comet Nucleus, Whose Diameter Is 1 Km

question 65

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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