A) 1.6 m/s
B) 2.8 m/s
C) 2.4 m/s
D) 1.8 m/s
Correct Answer: D
Solution :
[d] By the law of conservation of momentum, |
Initial momentum = Final momentum |
0 = 0.03 \[\times \] 120 +2\[\times \] v |
where, v is recoil velocity. |
0=3.6+2v |
\[v=\frac{-3.6}{2}=1.8m/s\] |
Here, negative sign is for recoiling in opposite directions. |
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