Time Dilation (1 Viewer)

[hit patel]

Ques: A UFO flies past the earth at 0.2c. An observer on earth watches ufo for 0.5s. Calculate the time the astronaut in the UFO sees the earth observer watching.
Still unable to see why to is the spaceship observer in this situation and tv is 0.5 s and why the time is less? Because when thought about it, the motion of the earth at the same velocity as that of spaceship but the spaceship views in opposite direction so shouldnt time dilate cos he is watching how long the earth person is watching him go slower?

 

[anomalousdecay]

I don't get what you are asking for.

When doing these types of questions, you need to look at the difference in speed in terms of two objects in an inertial frame of reference.

 

[strawberrye]

What do you mean by the motion of the earth at the same velocity as that of spaceship? Can you upload an image of the actual question or the diagram so we can get a clearer idea of what you mean, and we can help you further