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You demonstrate hitting a board in a karate class. The speed of your hand as it hits the thick board is 14 m/s with respect to...Asked by Bob
You demonstrate hitting a board in a karate class. The speed of your hand as it hits the thick board is 12 m/s with respect to the board, and the mass of your hand is about 0.74 kg.
How deep does your hand go into the board before stopping if the collision lasts for 2.0×10−3s?
How deep does your hand go into the board before stopping if the collision lasts for 2.0×10−3s?
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Answered by
Stevium
Find the kinetic energy of the arm,then equate it to work done,find the force using MV/T,then find your D,since W=F*D
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