$13-19.$ If the suitcase has an initial velocity down

the ramp of $v_A=10$ ft$/$s and the coefficient of kinetic friction along AB

$AB$ is ${}_k=0\mathrm{.}2.$ Determine the point where it strikes the ground at C$.$ How long does it take to go from A to C$?$

ANS$-$ R$=5\mathrm{.}08,$ t$=1\mathrm{.}48$s