The Head of a Hammer (M = 1

question 30

Multiple Choice

The head of a hammer (m = 1.5 kg) moving at 4.5 m/s strikes a nail and bounces back with the same speed after an elastic collision lasting 0.075 s. What is the magnitude of the average force the hammer exerts on the nail?

• A)6.8 N
• B)60 N
• C)90 N
• D)180 N
• E)240 N

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Definitions:

Inflammation

A biological response to harmful stimuli, such as pathogens or damaged cells, characterized by redness, swelling, heat, and sometimes pain.

Sensation Loss

A condition where there is a diminished or total lack of sensory perception in certain areas of the body.

Crossed Extensor Reflex

A reflex action in which the extension of one limb is accompanied by the flexion of the opposite limb, providing balance and posture support.

Stretch Reflex

A muscle contraction in response to stretching within the muscle, a mechanism that helps maintain muscle tone and posture.