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post #55 of (permalink) Old 07-02-2006, 05:08 PM
country flag Merton
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Re: Commentary at its best

Originally Posted by R.Federer
The gravity comment is elementary physics, but acceleration related topics are usually not
Maybe your education was done elsewhere where elementary physics is actually more advanced
I am just talking about high school physics in Greece, i guess it is similar elsewhere. The fact that a particle cannot accelerate without the influence of an external force looks pretty elementary. After the racquet contact, the only force on the ball is its own weight.

Salvor Hardin: "Violence is the last refuge of the incompetent"

From Isaac Asimov's "Foundation".
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