A) 48 J
B) 96 J
C) Zero
D) None of these
Correct Answer: D
Solution :
Loss in K.E. = (initial K.E. ? Final K.E.) of system \[\frac{1}{2}{{m}_{1}}u_{1}^{2}+\frac{1}{2}{{m}_{2}}u_{2}^{2}-\frac{1}{2}({{m}_{1}}+{{m}_{2}}){{V}^{2}}\] \[=\frac{1}{2}3\times {{(32)}^{2}}+\frac{1}{2}\times 4\times {{(5)}^{2}}-\frac{1}{2}\times (3+4)\times {{(5)}^{2}}\] = 986.5 J
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