Work, Energy and Power

Question: A bag (mass M) hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined (bag + bullet) system

1) Momentum is $\frac{{mvM}}{{M + m}}$

2) Kinetic energy is $\frac{{m{v^2}}}{2}$

3) Momentum is $\frac{{mv(M + m)}}{M}$

4) Kinetic energy is $\frac{{{m^2}{v^2}}}{{2(M + m)}}$

Solution:

Explanation: No Explanation

WEP Perfectly Inelastic Collision

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