A 25-Kg Object Falls Vertically Downward in a Viscous Medium at at a Constant

question 15

Multiple Choice

A 2.5-kg object falls vertically downward in a viscous medium at a constant speed of 2.5 m/s. How much work is done by the force the viscous medium exerts on the object as it falls 80 cm?

• A) +2.0 J
• B) +20 J
• C) −2.0 J
• D) −20 J
• E) +40 J

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Definitions:

Biological Drives

Innate impulses in living organisms that contribute to their survival, such as hunger, thirst, and the instinct for reproduction.

Contact Comfort

The psychological and emotional comfort that an infant derives from being in physical contact with its caregiver, suggesting the importance of touch in social and emotional development.

Signs of Distress

Indicators or symptoms showing that an individual is experiencing emotional or physical discomfort.

Separation

The process of distinguishing oneself from others or from previous conditions, often used in psychological contexts to describe individualization.