A) \[-3J/kg\]
B) \[-2J/kg\]
C) \[-5J/kg\]
D) none of these
Correct Answer: C
Solution :
| [c]\[W=({{U}_{f}}-{{U}_{i}})+({{K}_{f}}-{{K}_{i}})=m({{V}_{f}}-{{V}_{i}})+({{K}_{f}}-{{K}_{i}})\] |
| \[-3=1({{V}_{A}}-0)+\frac{1}{2}\times 1\times {{(2)}^{2}}-0\] |
| \[\therefore \]\[{{V}_{A}}=-5J/kg\] |
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