A) 192 mJ
B) 96 mJ
C) 384 mJ
D) 768 mJ
Correct Answer: A
Solution :
By the conservation of momentum, \[{{m}_{A}}{{\nu }_{A}}\,={{m}_{B}}{{\nu }_{B}}\] \[\Rightarrow \,\,\,\,m \times 16 = 2\,m \times \,\,{{\nu }_{B}}\] \[\Rightarrow \,\,\,\,{{\nu }_{B}} = 8 m/s\]0 Kinetic energy of system \[=\frac{1}{2}\times m\times {{(16)}^{2}}+\frac{1}{2}\times (2m)\times {{8}^{2}}=192\,mJ\]You need to login to perform this action.
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