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Thread: Need a little math help to answer another forum question

  1. #1 Need a little math help to answer another forum question 
    Cooking Something Good MacGyver1968's Avatar
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    I'm having some trouble figuring out how to calculate something for another question on this forum....I guess I partied too much in my twenties, because I'm sure I knew how to do this in college...but I'm getting a "lack of ram" error from my brain now. Here goes:

    The speed of light is ~300km/s

    if you were accelerating at 50m/s2(squared..how do you type exponents?) how long would it take to reach C?

    Any help would be greatly appreciated.


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  3. #2  
    Forum Isotope Zelos's Avatar
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    classic:
    V=at
    V=300000
    a=50
    t=V/a=300000/50=6000s

    relativistic: never

    btw, C~300000km/s
    not 300km/s


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  4. #3  
    Cooking Something Good MacGyver1968's Avatar
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    Ooops thats my second scientific error today.

    test please ignore:

    E=mc<sup>2</sup>
    there we go!
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  5. #4  
    Forum Isotope Zelos's Avatar
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    no problem, but if you want to know the acceleration as you approch C i can give that to you aswell
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  6. #5  
    Forum Professor river_rat's Avatar
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    Quote Originally Posted by Zelos
    classic:
    V=at
    V=300000
    a=50
    t=V/a=300000/50=6000s
    Check your units though Zelos - the correct answer is 3 x 10^8 (m/s) / 50 (m/s^2) which gives 6 x 10^6 seconds or almost 69 and a half days.
    As is often the case with technical subjects we are presented with an unfortunate choice: an explanation that is accurate but incomprehensible, or comprehensible but wrong.
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  7. #6  
    Forum Isotope Zelos's Avatar
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    riverrat, i used the numbers he gave me, i know that there shall be another 3 0's but he used units with 3 0's to little so i did the same
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  8. #7  
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    Er,

    There's a flaw in your calculation chaps, as I understand it (and I may be proven wrong), you are using newtonian mechanics to calculate this figure - Newton was proven wrong by Einstein who shows that as you get toward the speed of light a body would tend toward infinite mass which as I understand it would then mean you would need toward infinite energy to accelerate further, i.e the barrier to travelling faster than light.
    If infinite energy existed there could be no room for our little corner of the universe as it to would be filled with energy. ergo light speed of physical objects is strictly prohibited (except on paper or film). Least that's what I learned at school, but that was a long time ago.
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  9. #8  
    Forum Isotope Zelos's Avatar
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    billco, i said "classical" and "relativity" in relativity i state, "never"
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  10. #9  
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    The speed of light is defined at the speed with which Zelos posts.

    Seriously, dude, you joined two months ago and have done over a thousand posts - at least a coupla years' worth by any normal forum poster!!
    "It is comparatively easy to make clever guesses; indeed there are theorems, like 'Goldbach's Theorem' which have never been proved and which any fool could have guessed." G.H. Hardy, Fourier Series, 1943
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  11. #10  
    Forum Isotope Zelos's Avatar
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    The speed of light is defined at the speed with which Zelos posts.
    :-D

    Seriously, dude, you joined two months ago and have done over a thousand posts - at least a coupla years' worth by any normal forum poster!!
    what should i say? i love science, i love this forum, feel i want to be everywhere ^_^
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

    The king of posting
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  12. #11  
    Forum Sophomore Absane's Avatar
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    Quote Originally Posted by Zelos
    Seriously, dude, you joined two months ago and have done over a thousand posts - at least a coupla years' worth by any normal forum poster!!
    what should i say? i love science, i love this forum, feel i want to be everywhere ^_^
    On Sciforums I gone from 800 posts to 4,000 in about 3 or 4 months.

    I'm a post whore.
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