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How it Was Done: 9/11 and the Science of Building Demolition
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<blockquote data-quote="Edial" data-source="post: 65913094" data-attributes="member: 90251"><p>I think you might be restating what some other folks are saying without really looking into it.</p><p></p><p>When a falling mass (solid mass) meets resistance only <u>some</u> of the energy is absorbed.</p><p>If the heavy solid mass is falling down with certain speed and a debris (from explosion or compression) bounces up unto it, the falling mass would certainly absorb some of the impact, but it will also increase the bounce back speed ... unless of course the falling mass is as soft as sand.</p><p></p><p>Take a tennis paddle and bounce the tennis ball off the floor few times.</p><p>Each time you hit the ball as it comes up, the speed of the tennis ball increases at the point of impact of the paddle as it hits downwards.</p><p></p><p>Thanks,</p><p>Ed</p></blockquote><p></p>
[QUOTE="Edial, post: 65913094, member: 90251"] I think you might be restating what some other folks are saying without really looking into it. When a falling mass (solid mass) meets resistance only [U]some[/U] of the energy is absorbed. If the heavy solid mass is falling down with certain speed and a debris (from explosion or compression) bounces up unto it, the falling mass would certainly absorb some of the impact, but it will also increase the bounce back speed ... unless of course the falling mass is as soft as sand. Take a tennis paddle and bounce the tennis ball off the floor few times. Each time you hit the ball as it comes up, the speed of the tennis ball increases at the point of impact of the paddle as it hits downwards. Thanks, Ed [/QUOTE]
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