The velocity of the bullet becomes one third after it penetrates $4\,cm$ in a wooden block. Assuming that bullet is facing a constant resistance during its motion in the block. The bullet stops completely after travelling at $(4+x)\,cm$ inside the block. The value of $x$ is$.....$
- [JEE MAIN 2022]
- A$2$
- B$1$
- C$0.5$
- D$1.5$
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