A karate expert executes a swift blow and severs a brick with her bare hand. Equal magnitudes occur for the

Question

Quizplus · Accepted Answer

According to Newton's third law, the force applied by the expert's hand on the brick is equal in magnitude and opposite in direction to the force applied by the brick on the expert's hand. This means the impulse experienced by the brick and the hand is equal in magnitude as well. Also, since the brick and the hand are in contact for the same duration of time, the time of contact is equal for both. Therefore, all of the above choices are correct.

A Karate Expert Executes a Swift Blow and Severs a Brick