A) 196cm/s
B) 9.8 cm/s
C) 98 cm/s
D) 980 cm/s
Correct Answer: D
Solution :
From law of conservation of momentum Total momentum of bullets = Momentum of disc \[2mv\,n=mg\] \[v=\frac{mg}{2\,m\,n}\] \[=\frac{100\times 980}{2\times 5\times 10}=980\,cm/s\]You need to login to perform this action.
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