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Give a plausible explanation for the breaking of wooden boards or bricks by a karate punch. (See "Karate Strikes," by Jearl D. Walker, American Journal of Physics, October 1975, p. 845.)

Give a plausible explanation for the breaking of wooden boards or bricks by a karate punch. (See "Karate Strikes," by Jearl D. Walker, American Journal of Physics, October 1975, p. 845.)

Grade:11

1 Answers

Kevin Nash
askIITians Faculty 332 Points
8 years ago
In the process, breaking of wooden boards or bricks by a karate punch, the collision between the hand and brick is only for a few milliseconds. Because the applied external force is large and the time of collision is small therefore the average impulsive force is relatively large. Thus when you break a wooden board or bricks by a karate punch you have to apply large force for the minimum time which is impulse. Therefore the impact force on the brick or wooden boards will be high.

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