A question for a brainiac

Discussion in 'CycleChat Cafe' started by mickle, 18 Aug 2012.

  1. If my spaceship accelerates at a constant rate of 1G how long will it take to reach the speed of light and how far will i have travelled in that time.
     
  2. OP
    OP
    mickle

    mickle FFS

    If my spaceship accelerates at a constant rate of 1G how long will it take to reach the speed of light and how far will i have travelled in that time.
     
  3. threebikesmcginty

    threebikesmcginty Corn Fed Hick...

    Location:
    ...on the slake
    Depends if you're in it.
     
    RaRa and Mad Doug Biker like this.
  4. snorri

    snorri Legendary Member

    If my spaceship vibrated so much that when posting on CC I hit the Enter key twice I would be checking out the Emergency Exit.:thumbsup:
     
    Mad Doug Biker, Pat "5mph" and ColinJ like this.
  5. Norm

    Norm Guest

    Can you confirm that you mean 'how far' and 'how long' as measured by the observer because I'm not sure I'm up to incorporating relativity into the calculations.
     
  6. Red Light

    Red Light Guest

    Approx. 1G is about 10m/s per second. The speed of light is 300,000,000m/s. Therefore it will take 300,000,000/10 or 30 million seconds to get to the speed of light. Which equates to about 350 days or one year. Since the acceleration is constant from zero to the speed of light the distance travelled in a year will be about half a light year. More precisely the distance travelled is s=0.5a.t². a= 10m/s², t=30,000,000 so s=4.5.10¹⁵m or just under half a light year as expected.
     
    Mad Doug Biker likes this.
  7. RecordAceFromNew

    RecordAceFromNew Swinging Member

    Location:
    West London
    FTFY!
     
  8. Didn't even know you had a spaceship :unsure: :tongue:
     
    Pat "5mph" and Norm like this.
  9. palinurus

    palinurus Guru

    Location:
    Watford
    I'm not exactly a brainiac but remembering a bit of school physics- I can remember equations of motion at least- I make it a few days short of a year. There's probably all sorts of relativistic shoot that says my answer is bollocks though.

    Oh, you want distance too. Hang on...
     
  10. bikepete

    bikepete Veteran

    Location:
    York, UK
  11. Pat "5mph"

    Pat "5mph" A kilogrammicaly challenged woman Moderator

    Location:
    Glasgow
    What's a 1G ... what's the speed of light ... what are we ... where are we ... :wacko:
     
  12. palinurus

    palinurus Guru

    Location:
    Watford
    What units do you want it in? I make it 0.49 light years.

    Do I have to show my working?
     
  13. Red Light

    Red Light Guest

    As per my post in the other thread, just under a year and just under half a light year.
     
    Mad Doug Biker likes this.
  14. palinurus

    palinurus Guru

    Location:
    Watford
    A few days short of a year being 354 days. You can get a pretty long way in a year, assuming my calculation isn't wildly off. You'd need plenty fuel, I don't intend to calculate how much.
     
  15. threebikesmcginty

    threebikesmcginty Corn Fed Hick...

    Location:
    ...on the slake
    That other thread is much more interesting, this one's sh!te.
     
    Pat "5mph" likes this.
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