A) \[\text{2}\,\text{kg-}{{\text{m}}^{\text{2}}}\text{/s}\]
B) \[\text{8}\,\text{kg-}{{\text{m}}^{\text{2}}}\text{/s}\]
C) \[\text{6}\,\text{kg-}{{\text{m}}^{\text{2}}}\text{/s}\]
D) \[\text{3}\,\text{kg-}{{\text{m}}^{\text{2}}}\text{/s}\]
Correct Answer: C
Solution :
\[V=\sqrt{{{5}^{2}}+2gh}\] |
\[=\sqrt{{{5}^{2}}+2\times 10\times 10}=\sqrt{225}\] |
= 15 m/s |
\[h=rmv=20\times (20\times {{10}^{-3}}kg)\times (15)\] |
\[=6kg-{{m}^{2}}/\sec .\] |
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