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An excellent learning aid!while
Just a semantic nit-pick (may be a serious confusion to some students):
A motion like Vo = 10; a = -5 is described as an object slowing down
moving in the positive direction. The student will notice that this isa
correct description only of the first 2 seconds of the motion -thereafter
it is speeding up while moving in the negative direction.
Bob
Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor