(meteorobs) Falling Meteors

[Roberto G.]

>From: "Harding"
>
>
>I am doing a science project and I am in the 4th grade.  I read what you
> said about how fast meteors fall.  But does the weight of the meteor 
> affect
> how fast it falls?
>
>
>
> Thanks,
>
> Josh

I think that you want data, here there are as I known:
until 1 Tn the meteorites fall on the ground at a speed
between 150-200 meters/sec, around the same of a jet,
over 1 Tn and 10-20-30 Tn  they fall with speed until
2-3 Km/sec (ipersonic), a side of the original geocentric speed,
over 100 Tn they conserve a big side of they original geocentric
speed, the asteroids/comets fall as the Earth atmosphere it's
not. The geocentric speed in general it's lost at around 12 Km
over the sea. The meteorites that crash on the Earth ground
MUST to have a original geocentric speed not over 20-30 Km/sec
if it's biggest the meteorite burn completly during its travel in our
atmosphere. Naturally all this data are data only for the Earth
for other planets it's different.
Best greetings.
Roberto Gorelli