Question : When a bullet is fired at a target, its velocity decreases by half after penetration 30 cm into it. The additional thickness it will penetrate before coming to rest is
(A) 30 cm
(B) 40 cm
(C) 10 cm
(D) 50 cm
Answer : option (C)
Solution :
When a bullet is fired at a target, its velocity decreases by half after penetration 30 cm into it. The additional thickness it will penetrate before coming to rest is
with
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