Question: Question 1 5 ( Mandatory ) ( 5 points ) A 1 2 - kg rock is falling with a speed at 4 m s

Question 15(Mandatory)(5 points)
A 12-kg rock is falling with a speed at 4ms and a 3.0-kg wooden block is shot upward with a speed at 10.0ms. The total kinetic energy of the roack and the block is
B.-54 J
D.162 J
A.246 J
C.0 J
Question 1 5 ( Mandatory ) ( 5 points ) A 1 2 -

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