Bullet Into Wood: Heat or Energy Loss?

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When a bullet embeds into wood, energy is not conserved due to the transformation of kinetic energy into other forms. The deformation of the wood involves both elastic and inelastic energy, with the elastic component being conserved while the inelastic portion is lost. Additional energy losses occur in the form of heat, sound, and potentially light from sparks. The discussion highlights the complexity of energy transformation during the impact. Understanding these energy dynamics is crucial in physics and engineering contexts.
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Hello,

This is not really homework, but is in the context of my course.

We always say that a bullet embeded into a wood does not conserve energy. We say heat is created. But, I was wondering: is the deformation of the wood considered heat released or is it some other kind of energy?

Is there any other kind of energy loss? What type?
 
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The deformation of the wood would be a combination of elastic and inelastic energy. The elastic component would be conserved but the inelastic portion would not.

Other energy losses aside from heat/friction would be sound and possibly light from sparks.
 

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