A) 1 m/s
B) 0.5 m/s
C) 4 m/s
D) 0.25 m/s
Correct Answer: A
Solution :
According to conservation of linear momentum \[0={{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}\] \[0=1\times 2\times 2\times {{v}_{2}}\] \[{{v}_{2}}=-1m/s\] Negative sign shows that 2 kg is pulled in a opposite direction to that of mass 1 kg.You need to login to perform this action.
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