Astronomers discover a planet orbiting around a star similar to our sun that is 20 lightyears away. How fast must a rocket ship go if the round trip is to take no longer than 40 years in time for the astronauts aboard? How much time will the trip take as measured on Earth?

Astronomers discover a planet orbiting around a star similar to our sun that is 20 lightyears away. How fast must a rocket ship go if the round trip is to take no longer than 40 years in time for the astronauts aboard? How much time will the trip take as measured on Earth?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter5: Relativity

Section: Chapter Questions

Problem 87AP: Two astronomical events are observed to occur at a time of 0.30 s apart and a distance separation of...

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Question

Astronomers discover a planet orbiting around a star
similar to our sun that is 20 lightyears away. How fast
must a rocket ship go if the round trip is to take no
longer than 40 years in time for the astronauts aboard?
How much time will the trip take as measured on
Earth?

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