Find initial acceleration of bullet when it enters the wood

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A bullet is fired into wood with a velocity v = 1340 ft/s and penetrates 5 in. If the velocity of the bullet in the wood is v = v_o x kx (ft/s) and (x in feet), find a) the initial acceleration of the bullet when it enters the wood and b) the time needed for the bullet to penetrate 4.5 in into the wood.

Reference no: EM13986941

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