A) 0.15 m/sec
B) 1.5 m/sec
C) ? 0.15 m/sec
D) None of the above
Correct Answer: C
Solution :
Initial linear momentum of system = \[{{m}_{A}}{{\vec{v}}_{A}}+{{m}_{B}}{{\vec{v}}_{B}}\] = 0.2 × 0.3 + 0.4 × vB Finally both balls come to rest \ final linear momentum = 0 By the law of conservation of linear momenum 0.2 × 0.3 + 0.4 × vB = 0 \ \[{{v}_{B}}=-\frac{0.2\times 0.3}{0.4}=-0.15\ m/s\]You need to login to perform this action.
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