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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

Quote:
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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