Boy Hit By Meteorite Travelling At 30,000mph, page 1
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Topic started on 12-6-2009 @ 11:42 PM by WhatTheory

Boy Hit By Meteorite Travelling At 30,000mph


news.sky.com
The white-hot meteorite bounced off the schoolboy's hand and hit the ground so hard it left a foot-long crater in the tarmac - as well as a three-inch scar on his hand.
(visit the link for the full news article)


reply posted on 13-6-2009 @ 12:56 AM by zetabeam
reply to post by fbnks



I'm in complete agreement with previous posters and would like to state that some of the laws of physics would have to be completely re-written if the article was true. A solid projectile travelling at anywhere near the speed reported does NOT bounce of a hand made of soft tissue and tear a huge gouge in the ground !

30,000 MPH ???? where's the guaranteed sonic boom ?

Also, how about the kinetic energy ?

Lets assume:
a mass of 100gms = 0.1 kgs;
a velocity of 30,000MPH = 13,300 meters/sec

So the KE would be approx
0.5 x 0.1 x 13,300 x 13,300 = 8.844 MegaJoules

And this bounced of his hand !!!!! Bu**Sh** !!!


reply posted on 13-6-2009 @ 06:57 AM by C.H.U.D.
reply to post by fbnks



Yes, there is something up with this story, and ZombieOctopus hit it on the head.

Meteorites, when they hit the ground are usually traveling at free-fall velocity, which is more like 300MPH than 30,000MPH. The surviving rock would never have had enough energy to make the crater in the news article. It's too small. IMO this story was made up.

The reaction by the scientific community has also been that this was made up by the boy...

Here's another link with a few more factoids:
www.space.com...


reply posted on 14-6-2009 @ 01:40 AM by mattifikation
reply to post by Moodle



If it caused the damage reported to the ground and came anywhere near his thumb, the heat generated would have vaporized it. The shock wave from the sonic boom would have killed him. The shrapnel from the exploding road would have torn him to pieces.

If it hit him, it wasn't fast enough to make the crater. If it made the crater, it didn't hit him first. Simple as that.


reply posted on 14-6-2009 @ 03:33 AM by The Last Man on Earth
reply to post by C.H.U.D.



Free-fall is just over 100mph, and its most likely it just winged him, or he's lying.


reply posted on 14-6-2009 @ 07:10 AM by C.H.U.D.
reply to post by The Last Man on Earth



Actually, it's closer to 300MPH than 100MPH if you want to nit-pick.

A meteorite may survive its atmospheric flight and may perhaps then be found if at least part of the body is decelerated from its entry velocity down to its free-fall terminal velocity of about 100 m/s.

Source: IMO

100 m/s = ~224MPH

I doubt it even winged him. Something like this happening is extremely rare. He probably bought the meteorite on ebay.
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