A Highway Curve Has a Radius of 0

question 13

Multiple Choice

A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of 24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?

• A) 12 kN
• B) 17 kN
• C) 13 kN
• D) 5.0 kN
• E) 49 kN

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Definitions:

Estimated Regression Equation

The estimate of the regression equation developed from sample data by using the least squares method. For simple linear regression, the estimated regression equation is yˆ = b0 + b1x.

Multicollinearity

A statistical phenomenon in which two or more predictor variables in a multiple regression model are highly correlated, making it difficult to distinguish their individual effects on the dependent variable.

Independent Variables

Variables in an experiment or statistical model that are manipulated or categorized to determine their effect on dependent variables.

Multiple Regression

A method in statistics that establishes the correlation between a dependent variable and multiple independent variables.