A Car Is Traveling on a Curve That Forms a Circular

question 30

Multiple Choice

A car is traveling on a curve that forms a circular arc. The force F needed to keep the car from skidding is jointly proportional to the weight $\text {W }$
Of the car and the square of its speed s, and is inversely proportional to the radius r of the curve. A car weighing 2,500 lbs travels around a curve at 70 mi/h. The next car to round this curve weighs 4,900 lbs and requires the same force as the first car to keep from skidding. How fast is the second car traveling?

• A) 49 mi/h
• B) 50 mi/h
• C) 44 mi/h
• D) 54 mi/h
• E) 52 mi/h

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Definitions:

Income Effect

The change in an individual's or household's consumption resulting from a change in real income, influencing purchasing power.

Leisure

The time spent away from work and essential activities, where one is free to engage in activities of choice.

Uber

A multinational ride-hailing company that offers services including peer-to-peer ridesharing, ride service hailing, and a food delivery app.

Wages

Payments made to employees for their labor or services, typically calculated on an hourly, daily, or piecework basis.