The two blocks are released from rest and the $30-$lb block $B$ moves

$2ft$ up the incline. The coefficient of kinetic friction between both

blocks and the inclined planes is ${}_k=0\mathrm{.}10.$

$($Figure $1)$

Part A

Determine the velocity of the $54-$lb block $A.$

Express your answer to three significant figures and include the appropriate units.

View Available Hint$($s$)$

$v_A=,ft$

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Figure