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MegaSwordman (November 30, 1999 at 12:00 am)
I apologize for my poor word choice. I made the incorrect assumption that when he spoke of direction, he implied that because the object is moving "downward", the sign must be negative.
eustazio (November 30, 1999 at 12:00 am)
A is a vector, expressed in an oriented space. Saying a is negative is inaccurate. It can be anything. And yes the direction of the vector matters in the result, just as much as the orientation chosen.
eustazio (November 30, 1999 at 12:00 am)
Uh acceleration is a vector so yeah direction does matter if you want the sign you give (positive or negative) to have any meaning.
I think you lack the knowledge to talk about those things. What you call "making up negative" is actually considering your vector in the vertical downward direction.
Unless you are splitting the hair and mean direction as oppsed to direction+orientation. But that would be being totally idiotic. Plus if it was the case you wouldn't say direction doesn't matter.
MegaSwordman (November 30, 1999 at 12:00 am)
Also wrong, direction does not matter. If we are using gravity as an example, I can make "up" negative or I can make "down" negative. It won't make a difference so long as I am consistent.
eustazio (November 30, 1999 at 12:00 am)
It's only fun if you can avoid staying OUT of the target zone ?? I think you meant the contrary.
eustazio (November 30, 1999 at 12:00 am)
wrong : you didn't specify the direction.
without precision, the 'acceleration' can be anything between -abs(a) and +abs(a).
sboss (November 30, 1999 at 12:00 am)
acceleration is negative
StingrayX5 (November 30, 1999 at 12:00 am)
i had to do this project when i was in middle school, i wish i knew what this video showed back then
RolexesRock (November 30, 1999 at 12:00 am)
get a pringles kan fill it with flour halfway put the egg in then fill it up duct tape the lid on its awesome i did it and it explodes when it hits but the egg is still alive
123456789warhamer (November 30, 1999 at 12:00 am)
i have a project at school |
