A Swimmer Heading Directly Across a River That Is 200

question 34

Multiple Choice

A swimmer heading directly across a river that is 200 m wide reaches the opposite bank in 6 min 40 s.During this swim,she is swept downstream 480 m.How fast can she swim in still water?

• A)0.50 m/s
• B)0.80 m/s
• C)1.2 m/s
• D)1.4 m/s
• E)1.8 m/s

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Definitions:

Poly(acrylonitrile)

A synthetic polymer made by polymerizing acrylonitrile, used in the production of fibers, plastics, and rubbers due to its strength and thermal stability.

Poly (vinyl Acetate)

A polymer made by polymerizing vinyl acetate, used in adhesives, paints, and various coatings.

Repeating Units

Sequential segments of the same structure in a polymer, which repeat numerous times to form the polymer chain.

Mechanism

Describes the step-by-step process through which reactants are converted to products in a chemical reaction, including the breaking and formation of bonds.