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How fast must a spacecraft travel relative to the earth for each day on the spacecraf to correspond to 2 days on the earth?​

Sagot :

Answer:

259,620,269 m/s.

Explanation:

Originally Answered: How fast much a spacecraft travel relative to the earth for each day on the spacecraft to correspond two days on the earth? 86.6% of the speed of light will dilate time by a factor of two. This is 259,620,269 m/s.