Tuesday, April 22, 2008

how things get from point A to point B

v_f = v_i + a\Delta t \,
d = \begin{matrix} \frac{1}{2} \end{matrix} (v_i + v_f)\Delta t
d = d_i + v_i\Delta t + \begin{matrix} \frac{1}{2} \end{matrix} a\Delta t^2
v_f^2 = v_i^2 + 2ad \,

and sometimes F = GMm/R²


Today's earrings: hands, liberty dimes

Bedtime reading: L. Frank Baum, Katharine M. Rogers

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