Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: Air resistance










Hi all-
re Ludwik's data-
*******************************************************************
t(s) d(m) v(m/s) a(m/s^2) R(N)

1.400 0.608 1.773 9.63
1.425 0.655 2.013 9.65
1.450 0.708 2.254 9.65
1.475 0.768 2.494 9.64 0.09
1.500 0.835 2.734 9.60 0.11
1.525 0.904 2.975 9.61 0.10
1.550 0.983 3.215 9.59 0.12
1.575 1.066 3.454 9.54 0.14
1.600 1.155 3.691 9.48 0.18
1.625 1.251 3.927 9.44 0.20
1.650 1.352 4.162 9.38 0.23
1.675 1.458 4.395 9.33 0.26
1.700 1.573 4.632 9.31 0.27
1.725 1.692 4.865 9.33
1.750 1.816 5.035 7.83
1.775 1.945 4.971 1.27
*******************************************************************
I don't understand the data. Look at the values from 1.600 s on.
The space increments, with two exceptions, increase from increment to
increment by .05. The two exceptions tell me that the position measurements
are uncertain in their last place, and the velocity differences are
unccertain in their first significant digit. The accelerations are
not good to more than 1 signifigant digit, and the differences are
garrbage.
Regards,
Jack