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We've gone from not enough information to too much.Rikudo said:My bad. I didn't write the question clearly
Alright, let me explain the question with a little bit more details.
there is a stick with mass ##m_2##hanging on a slider. Initially, the rod is not moving at all. After that, a mass ##m_1## hits the rod with velocity ##V_0##. As a result, the m1 stopped moving, while the rod's slider translating with velocity ##V_2'##.
Note : the stick is translating and rotating after the collision
Does this help you understanding the question more?
If I know the masses and initial states, where and how the bullet hits the rod, and what happens to it, I don't need to be told the speed of the slider.
The information that the bullet hits the rod square on at one end comes only from the diagram. Is it possible we should not assume it is right at the end?