A 25-Kg Crate Is Pushed Across a Frictionless Horizontal Floor

question 62

Multiple Choice

A 25-kg crate is pushed across a frictionless horizontal floor with a force of 20 N, directed 20°below the horizontal.The acceleration of the crate is:

• A)0.27 m/s²
• B)0.75 m/s²
• C)0.80 m/s²
• D)170 m/s²
• E)470 m/s²

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Definitions:

Standard error

A measure of the statistical accuracy of an estimate, indicating the variability of sample means around the population mean.

Standard deviation of population

A measure that quantifies the variation or spread of a set of data points in a population.

SAT scores

Standardized test scores used for college admissions in the United States, assessing a student's readiness for college.

Standard deviation

A measure that quantifies the amount of variation or dispersion of a set of data values.