Two Balls Are Thrown from the Top of a Building

question 23

Multiple Choice

Two balls are thrown from the top of a building.One is thrown up and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street?

• A) they are traveling at the same speed
• B) the one thrown down is traveling faster
• C) the one thrown up is traveling faster
• D) it depends on the height of the building

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Definitions:

Social Cost

The total cost to society, including both private and external costs, of producing a good or service.

Private Cost

The costs directly incurred by individuals or companies involved in conducting an economic activity, excluding any external effects on others.

External Cost

A cost of a transaction that affects someone who did not choose to incur that cost, often associated with negative side effects of economic activities not reflected in market prices.

Social-Cost Curve

A graphical representation showing the total cost to society of producing various levels of a particular good or service, including both private costs and external costs.