Re: Relativity question

"Doink" <skyman102a@xxxxxxx> wrote in message news:VaidnRMEAvlO1OvenZ2dnUVZ_tKdnZ2d@xxxxxxxxxxxxxxx
> OK, Energy = Mass X Speed of Light Sq.
>
> I understand the principle, that this translates to a BIG number and thus a
> lot of energy is contained in matter. Yes, matter is essentially frozen
> energy. Stipulated.
>
> By I'm thrown by the SPEED of light thing. If something has a mass of 10
> grams and I multiply it by 386,000 mph it doesn't make sense.

First if your multiplying by just speed then you're using the formula
incorrectly.

> Is there a
> scientific conversion from speed to some other unit????? How do you
> multiply mass times speed? Or is it just representational? Can the
> explanation be simplified?


1 erg (cgs unit of energy) = 1 gram x cm^2/sec^2. Notice this has
the same units as kinetic energy i.e. mass x speed^2.
10 grams x c^2 = 10 x (2.997925x10^10 cm/sec)^2 = 9.0x10^21 ergs, or
9000 billion billion ergs. Don't try this conversion at home.

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