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  • #16
    Originally posted by DirectPixel
    Gravity is never constant.

    9.8 m/s^2 is an estimate at the surface of the earth. It changes (very minutely) if something is not on the surface (eg. 10ft in the air).
    Yes well you don't take that into account when dealing with objects in low altitude...
    Chen Avinadav
    Better to remain silent and be thought a fool than to speak out and remove all doubt.

    גם אני מאוכזב מסיקור תחרות לתור מוטור של NRG הרשת ע"י מעריב

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    • #17
      it's asumed that gravity is 9.8m/s but in many parts of the world it's more or less, probably plus or minus only .5 m/s². Gravity away from the earth = Gravity on earth divided by whatever earth radiuses. (IE, 2x earth radius in orbit g = (9.8m/s²)(1/2) = 4.9m/s² )
      My board: http://forums.psx-dude.net
      Others: Find it Damn't!, Anime Site.

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      • #18
        Originally posted by psx-dude
        it's asumed that gravity is 9.8m/s but in many parts of the world it's more or less, probably plus or minus only .5 m/s². Gravity away from the earth = Gravity on earth divided by whatever earth radiuses. (IE, 2x earth radius in orbit g = (9.8m/s²)(1/2) = 4.9m/s² )
        Actually it's g = GM/R², so g* = g/0.5².
        Chen Avinadav
        Better to remain silent and be thought a fool than to speak out and remove all doubt.

        גם אני מאוכזב מסיקור תחרות לתור מוטור של NRG הרשת ע"י מעריב

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