$f\frac{t}{se{c}^2}$ and recorded every second after the drop for $8$ sec $,$ as shown. Find the following estimates.

$\backslash$table$[[$t$,0,1,2,3,4,5,6,7,8],[$a$,32\mathrm{.}00,19\mathrm{.}41,11\mathrm{.}77,7\mathrm{.}14,4\mathrm{.}33,2\mathrm{.}63,1\mathrm{.}59,0\mathrm{.}97,0\mathrm{.}59]]$

a$.$ Find an upper estimate for the speed when $t=8.$

$f\frac{t}{sec}$