A Karate Master Strikes a Board with an Initial Velocity

question 39

Multiple Choice

A karate master strikes a board with an initial velocity of 10.0 m/s,decreasing to 1.0 m/s as his hand passes through the board.If the time of contact with the board is 0.002 0 s,and the mass of the coordinated hand and arm is 1.0 kg,what is the force exerted on the board?

• A)1 000 N
• B)1 800 N
• C)2 700 N
• D)4 500 N

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Definitions:

Slave-Labor System

A system where individuals are forced into labor without pay, typically under harsh conditions.

Slaveholders

Individuals or entities that owned slaves, historically participating in the practice of human bondage and forced labor, a widely condemned violation of human rights.

Nonslaveholders

Individuals or households in slaveholding societies that did not own slaves, often due to economic reasons, ethical beliefs, or both.

Upper-Class

The social group at the top of a societal hierarchy that holds the highest status and often wealth, typically exerting significant power and influence.