A bullet weighing \( 10 \mathrm{~g} \) is fired with a velocity of \( 800 \mathrm{~m} / \mathrm{...

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A bullet weighing \( 10 \mathrm{~g} \) is fired with a velocity of \( 800 \mathrm{~m} / \mathrm{s} \). After passing through a mud wall \( 100 \mathrm{~cm} \) thick, its velocity falls to \( 100 \mathrm{~m} / \mathrm{s} \). Find the average resistance offered by the mud wall, neglecting friction due to air.
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