When skylab reentered the earths atmosphere on july 11, Ask an Expert

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When Skylab reentered the Earth's atmosphere on July 11, 1979,it broke into a myraid of pieces. One of the largestfragments was a 1770-kg lead-lined vault, and it landed with anestimate speed of 120m/s.

What was the kinetic energy of the film vault when it landed?

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