Physics Principles and Problems 2009

Section 7.1 : Planetary Motion and Gravitation

Self-Check Quizzes

1
Johannes Kepler was an assistant to _____.
A)Brahe
B)Copernicus
C)Cavendish
D)Newton
2
The _____ force is the force of attraction between two objects.
A)frictional
B)gravitational
C)planetary
D)universal
3
This illustration shows _____.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617906/ar.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>
A)Kepler's first law
B)Kepler's section law
C)Kepler's third law
D)The Law of Universal Gravitation
4
In this illustration, the planet moves fastest when it is _____ the Sun.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617906/as.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (5.0K)</a>
A)close to
B)equal to
C)farther from
D)parallel to
5
Which law states that objects attract other objects with a force proportional to the product of their masses and inversely proportional to the square of the distance between them?
A)Kepler's third law
B)Period of a planet orbiting the Sun
C)The Law of Universal Gravitation
D)The Universal Constant
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