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Re: [Phys-l] video

Oops. Two corrections:

At 11:10 AM, I wrote:

... In the case of Kittinger I used

mass = 100 kg
drag coef = .7
area = .7 m^2
surface density = 1.3 kg/m^3
scale height = 7000 m
init speed = 0 m/s
init altitude = 30,000 m
g = 9.8 m/s^2

I found that the speed topped out at 1000 m/s (~1% error from the
quoted value in the film) ...

I meant to say 1000 km/hr.

Then, at 11:47 AM, I wrote:
... For instance, if you "jump" from 100 km
(I'm not sure how you do that practically speaking!), drag is
completely inconsequential for the first two minutes and you reach
speeds around 3.6 km/s. ...

I should have said 3600 km/hr.

Bad day for me and numbers!

John Mallinckrodt
Cal Poly Pomona