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Re: Questions on Neg. and Pos. Acceleration

I'd like to ask as many of you as possible to give your students a
simple quiz question at the END of your mechanics material.

Ask them to sketch the velocity vs. time graph for Rick's ball, from
the instant that it leaves his hand to the instant that he catches it
again. Looking for the 'Big Picture' graph, NOT bothered by 'picky
details'.

Please don't blame all your students problems on their HS
experiences. (That would make *US* have to blame the elementary
schools etc and only the Dyaneticists among us would want


At 10:45 AM -0500 9/23/99, Richard Tarara wrote:

For conceptual purposes I find that a ball thrown vertically upwards
provides ample fruit for most of a semester's pondering of kinematics,
dynamics, energetics, etc.

Rick

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