A) 3 km/h
B) 2 km/h
C) 1 km/h
D) 4 km/h
Correct Answer: C
Solution :
Initial momentum = \[m\times 3+2m\times 0=3m\] Final momentum = \[3m\times V\] By the law of conservation of momentum \[3m=3m\times V\]Þ \[V=1\ km/h\]You need to login to perform this action.
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