A Swimmer Swims 20 Laps in a North-South Facing Pool

question 17

Multiple Choice

A swimmer swims 20 laps in a north-south facing pool in 7.00 minutes. Her first lap is toward the north. Her displacement and average velocity are

• A) 0; 0.
• B) 0; 2.38 m/s, south.
• C) 0; 2.38 m/s, north.
• D) 1 000 m, south; 2.38 m/s, south.
• E) 1 000 m, north; 2.38 m/s, north.

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Definitions:

Workers

Individuals engaged in any form of economic activity or labor, typically for the purpose of earning wages or salary.

Marginal Products

The additional output resulting from a one-unit increase in the use of a variable input, holding all other inputs constant.

Additional Workers

New employees hired by firms, contributing to increased production capacity or service provision.

Labor

The human effort used in the production of goods and services, in return for wages.