A 125-Kg Crate Slides Along a Horizontal Frictionless Surface at a a Constant

question 63

Multiple Choice

A 12.5-kg crate slides along a horizontal frictionless surface at a constant speed of 4.0 m/s. The crate then slides down a frictionless incline and across a second horizontal surface as shown in the figure.
-What is the kinetic energy of the crate as it slides on the lower surface?

• A)290 J
• B)320 J
• C)370 J
• D)470 J
• E)570 J

Appreciate the role of cognitive-behavioral theories in understanding personality disorders.

Understand how meta-analyses consolidate findings across studies to evaluate the effects of variables.

Comprehend the various forms of validity (construct, external, internal) and their importance in social psychology research.

Recognize the significance and methods of establishing sample size through power analysis.

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