A 16-Kg Block Slides Down a Plane (Inclined at 25° with with the Horizontal)

question 19

Multiple Choice

A 1.6-kg block slides down a plane (inclined at 25° with the horizontal) at a constant speed of 2.0 m/s. At what rate is the frictional force changing the mechanical energy of the block?

• A) +28 W
• B) +13 W
• C) −13 W
• D) −28 W
• E) +6.5 W

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Definitions:

Emotions

Complex psychological states that involve a subjective experience, a physiological response, and a behavioral or expressive response, and are elicited by specific stimuli or situations.

Serial Position Effect

A cognitive bias where individuals tend to remember the first and last items in a series better than those in the middle.

Recall

The process of retrieving information from memory without the aid of explicit cues.

Priming

A psychological effect in which exposure to a stimulus influences a response to a subsequent stimulus, without conscious guidance or intention.