why we can easily move our hand in air but to do the same through a solid block of wood we need a karate expert
why we can easily move our hand in air but to do the same through a solid block of wood we need a karate expert
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Answer:
we can move our hand in air as it has particles which are loosely packed and there are negligible force of attraction.
whereas wood is solid so force of attraction between particles is greatest.
Explanation:
because the karate player strikes the wooden block with his hand very very fast. In doing so the large momentum of the fast moving hand is reduced to zero in a very short time. this exerts a very large force on the wooden block which is sufficient to break it apart.
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