Kieran Takes Off Down a 50 M High,10° Slope on His

question 1

Multiple Choice

Kieran takes off down a 50 m high,10° slope on his jet-powered skis.The skis have a thrust of 280 N.The combined mass of skis and Kieran is 50kg (the fuel mass is negligible) .Kieran's speed at the bottom is 40 m/s.What is the coefficient of kinetic friction of his skis on snow?

• A)0.47
• B)0.58
• C)0.23
• D)0.29

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Definitions:

Nonparametric Statistical Methods

Statistical methods that do not assume a specific distribution for the data, often used when data doesn't meet the assumptions required for parametric tests.

Parametric Test

A statistical test that makes assumptions about the parameters of the population distribution from which the sample was drawn.

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples to assess whether their population mean ranks differ.

Wilcoxon Rank-sum Test

A nonparametric statistical test used to compare two independent samples to determine if they come from the same population or not, based on rank sums.