A Karate Expert Executes a Swift Blow and Breaks a Cement

A karate expert executes a swift blow and breaks a cement block with her bare hand. The magnitude of the force on her hand is

A) zero.
B) less than the force applied to the cement block.
C) the same as the force applied to the block.
D) more than the force applied to the block.
E) need more information

Correct Answer:

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