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A 7.80-9 bullet moving at 470 m/s penetrates a tree trunk to a depth of 4.90 cm. (a) Use work and energy considerations to fi
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Apely whk eurcy theoren Whet = DKE fka (180 + mve - zmy2 donloo - -Ź (7.8 x 103 (470² (4-9x10²) 61) = 17581.83N Vaus It Ar> -

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