In the Figure,a Ball Hangs by a Very Light String

question 62

Multiple Choice

In the figure,a ball hangs by a very light string.What is the minimum speed of the ball at the bottom of its swing (point B) in order for it to reach point A,which is 1.0 m above the bottom of the swing?

• A)2.2 m/s
• B)3.1 m/s
• C)4.4 m/s
• D)4.9 m/s

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Definitions:

Groups

In research, these refer to sets of subjects or items that have been separated based on characteristics or treatment conditions for analysis.

Chi-square Statistic

A statistical measure used in the chi-square test to evaluate the difference between observed and expected frequencies in one or more categories.

Expected Frequencies

The anticipated count of occurrences in each category of a variable, based on probability distributions or theoretical expectations.

Critical Value

A point on a statistical distribution that represents a threshold beyond which a given effect is significant or non-random.