Two Identical Cars Approach an Intersection

question 48

Multiple Choice

Two identical cars approach an intersection.One is traveling east at 18 m/s.The second is traveling north at 24 m/s.They collide violently,sticking together.Immediately after the crash they are moving

• A)30 m/s,37º N of E
• B)30 m/s,37º E of N
• C)15 m/s,37º N of E
• D)15 m/s,37º E of N
• E)42 m/s,37º N of E

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Definitions:

Horsepower

A unit of measurement for power, traditionally used to quantify the output of engines or motors.

Sum Of Squares

A statistical tool that quantifies the variance within a set of numbers, measuring the dispersion from their mean.

Error

A discrepancy between a computed or measured value and the true value.

Linear Regression

A statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation.