A 20-Kg Block Slides on a Rough Horizontal Surface

question 22

Multiple Choice

A 2.0-kg block slides on a rough horizontal surface.A force (P = 6.0 N) is applied to the block as shown.The magnitude of the block's acceleration is 1.2 m/s².What is the magnitude of the force of friction acting on the block?

• A)2.0 N
• B)1.4 N
• C)1.6 N
• D)2.8 N
• E)3.4 N

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Definitions:

Normally Distributed

A data distribution pattern in which most measurements are concentrated around the mean, creating a symmetrical bell-shaped curve.

Correlation Coefficient

A statistical measure that indicates the extent to which two variables fluctuate together, ranging from -1 to 1, where 1 means a perfect positive correlation.

Statistical Measure

Any of the various calculations used to summarize, describe, or interpret data, including mean, median, mode, variance, and standard deviation.

Two Variables

Refers to the consideration or analysis of two different pieces of data or aspects of the same research or study topic.