1.

Superman can fly at speeds almost equal to 2.6×107 m/s. A supersonic jet on the planet Krypton can fly at a maximum speed of 130000 m/s.

Answer»

Superman can fly at speeds almost equal to 2.6×107 m/s. A supersonic jet on the planet Krypton can fly at a maximum speed of 130000 m/s.




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