A) \[v\]
B) \[v/2\]
C) \[\sqrt{2\,v}\]
D) \[v/\sqrt{2}\]
Correct Answer: D
Solution :
According to law of conservation of linear momentum \[mv\hat{i}+mv\hat{j}=2mv'\] Or \[|2mv'|=m|v\hat{i}+v\hat{j}|\] \[2mv'=m\sqrt{{{v}^{2}}+{{v}^{2}}}\] \[v'=\frac{v\sqrt{2}}{2}=\frac{v}{\sqrt{2}}\]You need to login to perform this action.
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