A Car Leaves an Intersection Traveling West

question 18

Multiple Choice

A car leaves an intersection traveling west.Its position 4 sec later is 26 ft from the intersection.At the same time, another car leaves the same intersection heading north so that its position 4 sec later is 20 ft from the intersection.If the speeds of the cars at that instant of time are 8 ft/sec and 12 ft/sec, respectively, find the rate at which the distance between the two cars is changing.Round to the nearest tenth if necessary.Select the correct Answer

• A)13.7 ft/sec
• B)2.7 ft/sec
• C)4.1 ft/sec
• D)32.8 ft/sec

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Definitions:

Private Producer

An individual or company that produces goods or services in the private sector, usually with the goal of making a profit.

Unregulated Market

A market where operations are conducted without oversight by governmental regulations or interventions.

Product Variety

The assortment or range of different products or goods that are available in the market or produced by a company.

Free-Market System

A type of economic system where prices for goods and services are determined by the open market and by consumers. In a free-market system, the laws and forces of supply and demand are free from any intervention by a government or other authority.