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<blockquote data-quote="brant89" data-source="post: 1306312" data-attributes="member: 49553"><p>This is a perfect example of why you use momentum and not kinetic energy. Energy has the ability to change forms and directions. In a gun the powders chemical potential energy is converted to heat energy, which is then converted to kinetic energy to the bullet, which sheds velocity as the energy is converted back into heat energy (vapor trail) and sound waves (kinetic energy in the air), and is similarly converted into wave energy when it hits the animal creating the shock wave in the video where much of the energy is transferred PERPENDICULAR to the path of the bullet. This perpendicular energy transfer has no affect at all on moving the deer in the direction of the bullets travel. Momentum on the other hand always continues in the same direction as the largest vector.</p><p></p><p>As a side note, you might also notice that even with all that energy transfer the deer still did not move in any direction except straight down. Cool video!</p></blockquote><p></p>
[QUOTE="brant89, post: 1306312, member: 49553"] This is a perfect example of why you use momentum and not kinetic energy. Energy has the ability to change forms and directions. In a gun the powders chemical potential energy is converted to heat energy, which is then converted to kinetic energy to the bullet, which sheds velocity as the energy is converted back into heat energy (vapor trail) and sound waves (kinetic energy in the air), and is similarly converted into wave energy when it hits the animal creating the shock wave in the video where much of the energy is transferred PERPENDICULAR to the path of the bullet. This perpendicular energy transfer has no affect at all on moving the deer in the direction of the bullets travel. Momentum on the other hand always continues in the same direction as the largest vector. As a side note, you might also notice that even with all that energy transfer the deer still did not move in any direction except straight down. Cool video! [/QUOTE]
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