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:

Sulfur Dioxide

A toxic gas with a sharp, irritating smell, commonly produced by volcanic activity and industrial processes.

Acid Rain

Rainfall made acidic by atmospheric pollution that causes environmental harm, typically to forests and lakes.

Shale Gas

Natural gas that is found trapped within shale formations.

Anticlines

Upwardly convex folds in sedimentary layers of rock, which can form oil and gas reservoirs.