A) 2m/s
B) \[\sqrt{2}m/s\]
C) 1m/s
D) \[0.2\ m/s\]
Correct Answer: A
Solution :
\[P=E\] Þ \[mv=\frac{1}{2}m{{v}^{2}}\] Þ \[v=2\,m/s\]
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