Question

a bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. if the mass of the bullet is 0.025kg and average resisting force of the wood is 7x 10^3 N , Calculate the sppeed of the bullet just before it hits the wood block
wondering what the speed as it left was? If the leaving speed was zero, then
workbyfriction=initialKE
7E3*.15=1/2 .025*v^2
solve for v

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