As Kepler's First Attempt to Invent a Theory That Agreed

question 15

Multiple Choice

As Kepler's first attempt to invent a theory that agreed with Tycho's data, he tried to "fit" the data for Mars to an orbit that was

• A) a circle with Earth at the center.
• B) an ellipse with the sun at one focus.
• C) a circle with the sun at the center.
• D) an ellipse with Earth at one focus.
• E) a loop- the- loop, i.e., a circle within a circle.

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Definitions:

APS

Average Propensity to Save, the proportion of total income that is saved by a household or economy.

Saving

The act of setting aside a portion of income for future use, typically in a bank account or other secure investment.

Disposable Income

Resources meant for household spending and saving once income tax obligations are settled.

APC

The average propensity to consume, which is the fraction of total income that is spent on consumption as opposed to being saved.