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Paragraph : A spaceship traveling east flies directly over the head of an inertial observer who is at rest on the Earth's surface. The speed of the spaceship can be found from this relationship: sqrt(1-v^(2)//c^(2))=1//2. An apple falls from a tree and takes 4 s to reach the ground as reported by the Earth-bound observer. According to the navigator's instruments, how long did it take the apple to fall? |
| Answer» ANSWER :C | |