Question : A bullet moving with a velocity of 200 𝑐𝑚/𝑠 penetrates a wooden block and comes to rest after traversing 4𝑐𝑚 inside it. What velocity is needed for travelling distance of 9𝑐𝑚 in same block
(A) 100 𝑐𝑚/𝑠
(B) 136.2𝑐𝑚/𝑠
(C) 300𝑐𝑚/𝑠
(D) 250 𝑐𝑚/s
Answer : option (C)
Solution :
