## College Algebra (10th Edition)

$71.34$
$F=kAv^2$, hence here $11=k\cdot20\cdot22^2$, thus $k=0.00113636363$ Hence if $A=47.125$ and $v=36.5$, then $F=0.00113636363\cdot47.125\cdot36.5^2\approx71.34$