A) \[-81\,MJ\]
B) \[-81\text{ }KJ\]
C) \[-81\text{ }J\]
D) \[~-162\text{ }MJ\]
Correct Answer: A
Solution :
\[Potential\text{ }Energy=-Escupe\,\,Energy\] \[=-\frac{1}{2}m{{v}_{c}}^{2}\] \[=-\frac{1}{2}\,(2)\,\,\,{{(9\times {{10}^{3}})}^{2}}\] \[=-81\times {{10}^{6}}\,J\]
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