A Ladder Leans Against a Wall

question 16

Multiple Choice

A ladder leans against a wall. If the ladder is not to slip, which one of the following must be true?

• A) The coefficient of friction between the ladder and the wall must not be zero
• B) The coefficient of friction between the ladder and the floor must not be zero
• C) Both A and B
• D) Either A or B
• E) Neither A nor B

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Definitions:

Childhood Obesity

In a child, having a BMI above the 95th percentile, according to the U.S. Centers for Disease Control’s 1980 standards for children of a given age.

BMI

Body Mass Index is an indicator of body fat which utilizes both height and weight to apply to both adult males and females.

Impaired Social Response

Difficulty or inability to appropriately respond to social interactions, which can be a characteristic of various mental or neurological disorders.

Delayed Language

refers to a significantly slower than expected development of language abilities in children, often considered a sign of developmental issues or disorders.