An 80-Kg Block Is Released from Rest, with V₁ = 0

question 24

Multiple Choice

An 8.0-kg block is released from rest, with v₁ = 0.00 m/s, on a rough incline, as shown in the figure. The block moves a distance of 1.6-m down the incline, in a time interval of 0.80 s, and acquires a velocity of v₂ = 4.0 m/s. How much work does gravity do on the block during this process?

• A) +81 J
• B) +100 J
• C) +120 J
• D) -81 J
• E) -100 J

Distinguish between the Friedman test and other nonparametric tests like the Kruskal-Wallis test for various experimental designs.

Comprehend the calculation of test statistics and p-values in nonparametric tests.

Interpret the outcomes of statistical tests to make informed decisions in practical scenarios.

Identify the differences and similarities between the Friedman test and other nonparametric tests such as Wilcoxon and Kruskal-Wallis tests.

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