The $15$ lb suitcase $\backslash ($ A $\backslash )$ is released from rest at $\backslash ($ C $\backslash ).$ After it slides down the smooth

ramp, it strikes the $10$ lb suitcase $\backslash ($ B $\backslash ),$ which is originally at rest.

If the coefficient of restitution between the suitcases is $\backslash ($ e$=0\mathrm{.}3\backslash )$ and the coefficient of kinetic friction between the floor $\backslash ($ D E $\backslash )$ and each suitcase is $\backslash (\backslash$mu$\_\{$k$\}=0\mathrm{.}4\backslash ),$ determine the velocity of $\backslash ($ A $\backslash )$ just before impact. Express your answer with the appropriate units.

Part B

Determine the velocity of $\backslash ($ A $\backslash )$ just after impact.

Express your answer with the appropriate units.

Part C

Determine the velocity of $\backslash ($ B $\backslash )$ just after impact.

Express your answer with the appropriate units.

Figure