M. Warner Losh wrote:
In message: <[EMAIL PROTECTED]> Julian Elischer <[EMAIL PROTECTED]> writes: : You have about 1/4 a second to get the heads in once you detect that : you are falling.Yes. For a 4' fall, we know it takes 1/2 a second to reach the ground: s = 1/2 a t^2 + v0 t + s0 s0 = 0, a = 32 f/s^2, v0 = 0, s = 4, solve for t gives 1/2 a second to make the fall. Sos was saying 10's of ms to retract the heads, so even a 300ms response time wouldn't be fatal, but it would be pushing the limits. For a 2' fall, you have even less time. More like 350ms. 1' is 250ms... Warner
I decided that you assume it's being picked up and slips out of your grasp and then dropped a pen from about 2' and said "yep, something like 1/3rd of a second.. I'll say something shorter than that" :-) _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
