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The Lockheed SR-71 Blackbird may be the fastest non- research airplane ever built; it traveled at 2200 miles/ hour (983 m/s) and was in operation from 1966 to 1990. Its length is 32.74 m.

(a) By what percentage would it appear to be length contracted while in ?ight?

(b) How much time difference would occur on an atomic clock in the plane compared to a similar clock on Earth during a ?ight of the Blackbird over its range of 3200 km?

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