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A rocket moves at constant speed u toward a stationary mirror.
When the rocket is a distance d from the mirror
(as measured by an observer at rest with respect to the mirror)
a light pulse is emitted from the rocket toward the mirror
and is subsequently reflected back to the rocket.
What is the total travel time of the light pulse
as measured by an observer in
- 1.
- [5 marks]
the rest frame of the mirror?
- 2.
- [5 marks]
the rest frame of the rocket?