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Author Topic:   The predictions of Walt Brown
crashfrog
Member (Idle past 1496 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 68 of 260 (178973)
01-20-2005 3:08 PM
Reply to: Message 67 by Coragyps
01-20-2005 3:02 PM


Walt is either loony, or he's trying to con the people that slept through physical science class in the ninth grade.
I think what he doesn't understand is that heat and kinetic energy are almost the same thing.

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 Message 67 by Coragyps, posted 01-20-2005 3:02 PM Coragyps has not replied

  
crashfrog
Member (Idle past 1496 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 77 of 260 (178989)
01-20-2005 4:33 PM
Reply to: Message 74 by johnfolton
01-20-2005 4:07 PM


How fast will we be falling?
A skydiver's body exerts atmospheric drag which retards his velocity. The maximum speed of a falling body - called "terminal velocity" - is related to the weight of the body and the atmospheric drag it exerts due to it's surface area; which is obviously how parachutes work.
Outside of the atmosphere objects accellerate without hitting a terminal velocity; when they re-enter, the atmosphere exerts drag and pressure on the object. This is why the Space Shuttle heats up on re-entry.
The speed of skydivers has absolutely nothing to do with this issue because the objects we're talking about don't have the weight/drag ratio of skydivers.

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 Message 74 by johnfolton, posted 01-20-2005 4:07 PM johnfolton has not replied

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