A Block of Wood Is Pulled by a Horizontal String

question 43

Multiple Choice

A block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 20 N. If the coefficient of kinetic friction between the surfaces is 0.2, what is the weight of the wooden block?

• A) 20 N
• B) 40 N
• C) 75 N
• D) 100 N
• E) 10 N

---

Definitions:

Raw IQ Scores

The initial, unadjusted scores obtained directly from IQ tests before any age-related adjustments or standardization.

Normal Distribution

A statistical function that represents the distribution of many types of data; most values are centered around a mean value, creating a symmetrical bell-shaped curve.

Creative Intelligence

The ability to solve novel problems and think in new and inventive ways.

Robert Sternberg

An American psychologist known for his theory on the triarchic theory of intelligence, which posits that human intelligence comprises analytical, creative, and practical dimensions.