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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A bullet leaving the muzzle of a rifle barrel with velocity v penetrates a plank and loses one-fifth of its velocity. It then strikes second plank, which it just penetrates through.

A bullet leaving the muzzle of a rifle barrel with velocity v penetrates a plank and loses one-fifth of its velocity. It then strikes second plank, which it just penetrates through.

A bullet leaving the muzzle of a rifle barrel with velocity v penetrates a plank and loses one-fifth of its velocity. It then strikes second plank which it just penetrates through.