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Re: g

That's what they are doing I think.....
I will try to emphasize keeping the same coordinate system
Tina


On the other hand, if your students want to think that v = v0 - gt when the
object is moving downward, and v = v0 + gt when it is moving upward, then we
have a problem. Once the coordinate system is established, then for that
problem the acceleration has to remain fixed at +g or at -g for movement in
either direction.<<<




Tina Fanetti
Physics Instructor
Western Iowa Technical Community College
4647 Stone Ave
Sioux City IA 51102
712-274-8733 ext 1429