A Drag Racer Starts from Rest and Accelerates at 8

question 50

Multiple Choice

A drag racer starts from rest and accelerates at 8.0 m/s² for the entire distance of 400 m (1/4 mile) .What is the speed of the race car at the end of the run?

• A) 32 m/s
• B) 40 m/s
• C) 64 m/s
• D) 80 m/s

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Definitions:

Chi-Squared Distribution

A probability distribution that is commonly used in hypothesis testing and models the distribution of sum of squares of independent standard normal random variables.

Chi-Square Distribution

A probability distribution that is used in statistical significance tests, especially for categorical data.

Degrees of Freedom

The quantity of distinct values or amounts that a statistical distribution can accept.

Population Variance

A measure of the spread of a population’s values, indicating how much the individuals within the population differ from the population mean.