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A rifle bullet loses half of its velocity in penetrating 24 cm in a wooden plank. The further distance covered by the bullet in coming to rest is: |
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Answer» 8 CM `(x_(1))/(x_(2))=([v^2-(v^2)/4])/([v^2/4-0])=3/4v^2xx4/v^2=3/1` `(x_(1))/(x_(2))=3/1implies (24)/(x_(2))=3/1implies x_(2)=8` cm. |
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