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a bullet of mass 0.03kg enters a block of wood with a velocity 600m/s & penatrate to a depth of 0.2m .Calculate the average force of the wood to the penetration of the bullet

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  1. 60000

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  2. 27000

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  3. change of momentum = .03*600 = 18

    average speed = 300
    time = .2/300

    Force = change of momentum/change of time
    = 18 *300/.2 Newtons
    = 90*300
    =27,000 agree

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  4. Thanks sir

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