Question
An astronaut leaves from Earth to Planet X. The planet is 10 light years away. The...
An
astronaut leaves from Earth to Planet X. The planet is 10 light
years away. The rocketship can accelerate at 10 m/s/s and in order
to land on the planet it has to deacelerate at the same rate. If
the astronaut leaves Earth in 2019 and goes to Planet X and back,
what year can they get back to Earth the earliest?
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