Three Identical Blocks Move Either on a Horizontal Surface, Up

question 15

Multiple Choice

Three identical blocks move either on a horizontal surface, up a plane, or down a plane, as shown below.They all start with the same speed and continue to move until brought to rest by friction.Rank the three situations according to the mechanical energy dissipated by friction, least to greatest.

• A)The same for all cases
• B)1, 2, 3
• C)1, then 2 and 3 tie
• D)3, 1, 2
• E)2, 1, 3

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Definitions:

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Type II Error

The error that occurs when the null hypothesis is falsely accepted, meaning the failure to detect an effect that is present.

Null Hypothesis

A hypothesis that assumes no statistical significance exists in a set of given observations.

Sample Mean

The arithmetic average of a set of sample values, used as an estimate of the population mean.