1. a UFO moves with a constant speed of 0.8c. An observer on Earth observes a pendulum inside a UFO having a period of 3 seconds, As seen in the picture. The question is, what is the period of the pendulum, if measured by a technician in the UFO?<br /><br />2. What is the speed of the spacecraft moving relative to Earth, so that the time of 2 hours in the spacecraft is equal to 30 minutes on Earth?<br /><br />#TimeDilation<br />#Relativity<br />#SpecialRelativity<br />#Rebiaz<br />
