It Takes a Swimmer 1 Hour to Cross a Lake

question 18

Multiple Choice

It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?

• A)it is 1/2 mi/hr
• B)it is 1 mi/hr
• C)it is equal to velocity squared
• D)it cannot be determined from the information given

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Definitions:

K

The chemical symbol for potassium, an essential mineral and electrolyte involved in nerve function and fluid balance.

[Cl-]

The chloride ion, a chlorine atom that has gained one electron to achieve a stable electronic configuration, commonly found in salt compounds.

HAc

A common abbreviation for acetic acid, a weak organic acid with the formula CH3COOH, known for its sour taste and pungent smell.

K

Symbol for potassium, a chemical element with atomic number 19, essential for various functions in living organisms.