A bullet on penetrating 30 cm into its target loses its velocity by 50%. What additional distanee will it penetrate into the target before it comes to rest?

A bullet on penetrating 30 cm into its target loses its velocity by 50

1.	A bullet on penetrating 30 cm into its target loses its velocity by 50%. What additional distanee will it penetrate into the target before it comes to rest?
Answer» 30 cm 20 cm 10 cm 5 cm Solution :For lirst part of PENCTRATION, by cquation of motion `((nu)/(2))^(2)-(nu)^(2)=2a(30xx10^(-2))` `a = -(3nu^(2))/(8(30xx10^(-2)))` For latter part of PENETRATION by EQUATION of motion `0-((nu)/(2))^(2)=2ax` `X= -(nu^(2))/(8A)` `= (nu^(2))/(8) ((8(30xx10^(-2)))/(-3nu^(2)))"" `(Using (i)) `= 10xx10^(-2)m = 10cm`

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A bullet on penetrating 30 cm into its target loses its velocity by 50%. What additional distanee will it penetrate into the target before it comes to rest?

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