Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: acceleration

----- Original Message -----
From: "John S. Denker" <jsd@AV8N.COM>

Asking what is "the" acceleration at the peak of a
parabolic arc is at best ambiguous.
-- The scalar acceleration is zero. The speed
is locally constant at this point.
-- The vector acceleration is of course just g.

At what point isn't the speed locally constant? It seems to me that this
reasoning would deny the existence of acceleration altogether. What am I
missing?