A) \[10\,m{{s}^{-1}}\]
B) \[20\,m{{s}^{-1}}\]
C) \[30\,m{{s}^{-1}}\]
D) \[40\,m{{s}^{-1}}\]
E) \[50\,m{{s}^{-1}}\]
Correct Answer: D
Solution :
Momentum of third piece \[p=\sqrt{p_{x}^{2}+p_{y}^{2}}\] \[=\sqrt{{{(16)}^{2}}+{{(12)}^{2}}}\] \[=20\] \[v=\frac{p}{m}=\frac{20}{0.5}\] \[=40\text{ }m{{s}^{-1}}\]You need to login to perform this action.
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