Time dilation in relation to earth time

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Time dilation affects the perception of time for the spaceship compared to observers on Earth. While the spaceship experiences a shorter travel time of 3.5 hours due to time dilation, Earth observers still measure the journey as taking 5 hours based on the defined speed of 1000 MPH over 5000 miles. The discussion highlights that relativity is rooted in our definitions of time and space, emphasizing that changes in gravity can influence the experience of time but do not alter the actual elapsed time for observers on Earth. Thus, while the ship's experience differs, the Earth time remains consistent at 5 hours. Understanding these concepts is crucial for grasping the implications of relativity in physics.
anoose101
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So I was watching a tv show when an idea just popped into my head, If let's say a spaceship left point A on Earth at (for arguments sake) 1000MPH and was to reach point B (5000 miles away) in 5 hrs. Now due to time dilation the ship itself only took 3.5 hrs to get there due to lack of gravitational presence the trip was a shorter time. Now my question is on Earth does it still take 5 hrs to get there or does it actually only take 3.5 hrs and further does that mean that lack of gravity=increase in relative velocity?
 
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Velocity is distance over time. A change in gravity changes relative time and so changes the relative velocity.

The ship still takes 5 hours to get there no matter how you look at it, because you defined the ship as traveling at 1000MPH over 5k miles.

Relativity is the result of our definitions of time and space.
 
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