Physics

After a tornado, a 0.55g straw was found embedded 2.3cm into the trunk of a tree. if the average force excerted on the straw by the tree was 65N, what was the speed of the straw when it hit the tree?

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  1. (Kinetic energy of straw) = Work = (Force)x(penetration distance)
    (1/2) M V^2 = F*X

    V = sqrt(2F*X/M)

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  2. 2.32

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  3. 74 m/s

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