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Location:
Land of Oz
Registered:
June 2004
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Re: Physicist please read.
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Thu, 07 April 2005 06:19
 
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Hi,
Kim is wrong, Barry and Kathy are only partly correct.
As RT142 mentioned, Newtons 3rd law states that the ball is exerting the same energy back into Barry as he throws the ball.
Gravity has nothing to do with Newtons 3rd law. So, in effect, yes he is exerting more energy than gravity (as Kathy said) to get the ball into the air. However, the energy Barry used to get the ball into the air is also directed back into him.
Kim is wrong because of the 3rd law and Barry, having much more mass than the ball, probably doesn't feel the "opposite and equal" effect on him - but it's there nonetheless.
Barry, would be correct if he was in a zero-gravity situation. Once the ball was thrown it would reach its terminal velocity and maintain it (that is, the velocity of his hand at the moment of release).
seeyuzz
river
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| | Subject | Poster | Date |
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Physicist please read.
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T APLUS 22 | Thu, 07 April 2005 05:26 |
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Re: Physicist please read.
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Corona RT142 | Thu, 07 April 2005 05:28 |
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Re: Physicist please read.
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st184 sillycar | Thu, 07 April 2005 05:34 |
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Re: Physicist please read.
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Phrozen_Death | Thu, 07 April 2005 06:09 |
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Re: Physicist please read.
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river | Thu, 07 April 2005 06:19 |
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Re: Physicist please read.
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hickoz_bro | Thu, 07 April 2005 06:38 |
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Re: Physicist please read.
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T APLUS 22 | Thu, 07 April 2005 15:02 |
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Re: Physicist please read.
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st184 sillycar | Fri, 08 April 2005 00:54 |
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Re: Physicist please read.
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THE WITZL | Fri, 08 April 2005 03:33 |
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Re: Physicist please read.
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Phrozen_Death | Fri, 08 April 2005 03:51 |
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Re: Physicist please read.
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st184 sillycar | Fri, 08 April 2005 04:07 |
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Re: Physicist please read.
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hickoz_bro | Fri, 08 April 2005 09:24 |
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Re: Physicist please read.
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river | Fri, 08 April 2005 10:36 |
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Re: Physicist please read.
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hickoz_bro | Sat, 09 April 2005 08:10 |
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Re: Physicist please read.
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T APLUS 22 | Sun, 10 April 2005 08:38 |
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Re: Physicist please read.
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hickoz_bro | Sun, 10 April 2005 10:47 |
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Re: Physicist please read.
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river | Tue, 12 April 2005 06:35 |
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Re: Physicist please read.
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T APLUS 22 | Tue, 12 April 2005 13:35 |
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Re: Physicist please read.
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b1gb3n | Mon, 11 April 2005 01:49 |
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Re: Physicist please read.
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T APLUS 22 | Mon, 11 April 2005 08:43 |
