A) 3.0 cm
B) 2.0 cm
C) 1.5 cm
D) 1.0 cm
Correct Answer: D
Solution :
[d] According to work-energy theorem, |
Case I When bullet is penetrating 3 cm |
where, F is resistive force and is initial speed. |
Case II Let the further distance travelled by the bullet before coming to rest is s. |
\[-F(3+s)\,={{K}_{f}}-{{K}_{i}}=-\frac{1}{2}\,mv_{0}^{2}\] |
or |
or |
or |
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