Check my math please

[observer7]

Using d=1/2at^2 to determine the distance travelled under constant acceleration.<br /><br />A=9.8m/s^2 (1G acceleration)<br /><br />I find that I'm traveling at c (light speed) in ~352 days and I have travelled 4.53x10^15 m (about 1/2 LY)<br /><br />What I need help on is how does relativity fit in? Do I have to consider whether I'm the traveller or an observer. As the traveller what "time" do I hit light speed? Where am I at?<br /><br />A little help, please.<br /><br /><br /><br /> <div class="Discussion_UserSignature"> <em><font size="2">"Time exists so that everything doesn't happen at once" </font></em><font size="2">Albert Einstein</font> </div>

 

[vogon13]

You haven't factored relativity into your equation, so your findings are relevant to us left behind and not accelerating with you.<br /><br />We experience 352 days, on the 352 day you are indeed ~1/2 ly distant.<br /><br />You on the otherhand, will not have experienced 352 days yet, relativistic time dilation having slowed your clock.<br /><br /><br /> <div class="Discussion_UserSignature"> <p><font color="#ff0000"><strong>TPTB went to Dallas and all I got was Plucked !!</strong></font></p><p><font color="#339966"><strong>So many people, so few recipes !!</strong></font></p><p><font color="#0000ff"><strong>Let's clean up this stinkhole !!</strong></font> </p> </div>

 

[observer7]

OK, so on board the clock is slow.<br /><br />What is the equation for my observed time / distance when I'm the traveller? <div class="Discussion_UserSignature"> <em><font size="2">"Time exists so that everything doesn't happen at once" </font></em><font size="2">Albert Einstein</font> </div>

 

[rocketman5000]

I'd have to dig out my old physics books for that math. Sorry I just don't carry those formulas in my head.

 

[spacefire]

he will not be travelling at c from our POV either. his velocity can never reach c, it would imply an infinite kinetic energy. there's a formula with 1/(1-v/c) or something like that, I can't remember the exact layout, which would describe his velocity. <div class="Discussion_UserSignature"> <p>http://asteroid-invasion.blogspot.com</p><p>http://www.solvengineer.com/asteroid-invasion.html </p><p> </p> </div>

 

[no_way]

http://en.wikipedia.org/wiki/Time_dilation<br /><br />the formula needed is given under "Time dilation at constant acceleration" section

 

[observer7]

Thanks!<br /><br />-- <div class="Discussion_UserSignature"> <em><font size="2">"Time exists so that everything doesn't happen at once" </font></em><font size="2">Albert Einstein</font> </div>

 

[trailrider]

'the formula needed is given under "Time dilation at constant acceleration" section.'<br /><br />Correct as long as you are limiting yourself to Einsteinian relativity theory. Just have to wait for Ephraim Cochrane to be born!<br /><br />"Warp Factor 4, Mr. Sulu! Engine room! Scotty, I need more power!"<br /><br />Ad Luna! Ad Ares! Ad Astra!