A) 0.25
B) 0.50
C) 0.625
D) 1.00
Correct Answer: B
Solution :
\[\frac{1}{2}\times 2{{u}^{2}}=\frac{1}{2}\times 8\times {{v}^{2}}\] U = 2v Ratio of momentum =\[\frac{{{m}_{1}}u}{{{m}_{2}}v}=\frac{2\times 2v}{8\times v}=\frac{1}{2}=0.5\]
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