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  1. njt2009's Avatar
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    #1

    what is sec2?

    what is sec2 for "3.5 metres/sec2"

  2. Barb_D's Avatar
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    #2

    Re: what is sec2?

    Picture the 2 raised up a bit - per second squared.


    • Join Date: Nov 2007
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    #3

    Re: what is sec2?

    Perhaps...

    but it does not have the same meaning as in y = x2 + 2x +1

    metres/sec2 is referring to acceleration, and is shorthand for
    metres per second per second, or metres/sec/sec

  3. konungursvia's Avatar
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    #4

    Re: what is sec2?

    I think it's exactly what Barb said, metres per second per second, or metres per second squared.

    Note that on keyboards people often use the circumflex to show exponents (powers, surds): m/s^2 or ms^-2


    • Join Date: Nov 2007
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    #5

    Re: what is sec2?

    OH?
    konungursvia:
    Perhaps my maths is rusty.
    Could you explain to me how,
    (with the formula for acceleration being
    a = (final velocity - initial velocity)/t )
    and so yielding an average, that this is also a mathematical exponential?????

    There is a difference between shorthand - gg , and st as I would write for 'going' and 'something', for examples, when taking lecture notes, minutes, whatever - and mathematical operations.
    Last edited by David L.; 12-Jul-2009 at 18:25.


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    #6

    Re: what is sec2?

    Quote Originally Posted by David L. View Post
    OH?
    konungursvia
    Perhaps my maths is rusty.
    No it is not. You hit the nail on the head.


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    #7

    Re: what is sec2?

    It just occurred to me.
    Please don't tell me konungursvia that you are suggesting that I was asserting that X^2 does not have the same meaning as X2, where, as Barb said, you need to picture "the 2 raised up a bit".
    That all of this is because of keyboard limitations in representing mathematical symbols?

    icon for GROAN if so.

  4. konungursvia's Avatar
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    #8

    Re: what is sec2?

    I think it might have been such a misunderstanding. I don't see any errors in anything any of us has written or asserted! Just different angles. :)

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