A 20-Kg Block Slides Down a Fixed, Rough Curved Track

question 28

Multiple Choice

A 2.0-kg block slides down a fixed, rough curved track. The block has a speed of 5.0 m/s after its height above a horizontal surface has decreased by 1.8 m. Assume the block starts from rest. What is the change in mechanical energy of the block caused by the force of friction during this descent?

• A) −14 J
• B) −12 J
• C) −10 J
• D) −16 J
• E) −25 J

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Definitions:

Gender Bias

The presence of prejudice or unsupported judgments favoring one gender over another.

Discrimination

The unjust or prejudicial treatment of different categories of people or things, especially on the grounds of race, age, sex, or disability.

Intergroup Power

Refers to the influence or control one social group holds over another, often in the context of social hierarchies, competition, or conflict.

Sexual Ambivalence

A state of mixed or conflicting feelings about sexual matters or sexual orientation.