Re: [Phys-l] video

[John Mallinckrodt <ajm@csupomona.edu>]

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