A) 162 J
B) 150 J
C) 192 J
D) 200 J
Correct Answer: C
Solution :
From the law of conservation of momentum \[3\times 16+6\times v=9\times 0\] or \[v=-8m/s\] \[\Rightarrow \] \[v=8m/s\] (numerically) Therefore, its kinetic energy \[K=\frac{1}{2}\times 6\times {{(8)}^{2}}=192\,\,J\]
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