Question: The 3 . 6 - 1 b rod A B is hanging in the vertical position. A 1 . 9 - lb block, sliding on

The 3.6-1b rod AB is hanging in the vertical position. A1.9-lb block, sliding on a smooth horizontal surface with a velocity of 12fts, strikes the rod at its end B.
(Figure 1)
Determine the velocity of the block immediately after the collision. The coefficient of restitution between the block and the rod at B is e=0.81.
Express your answer to three significant figures and include the appropriate units.
vb=
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