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Home Q & A Board Science-Related Homework Help Physics
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Jules3791 Jules3791
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11 years ago
Kepler's second law, which states that as a planet moves around its orbit it sweeps out equal areas in equal times, means that
 a planet's period does not depend on the eccentricity of its orbit.  

 planets that are farther from the Sun move at slower average speeds than nearer planets.  

 a planet travels faster when it is nearer to the Sun and slower when it is farther from the Sun.  

 planets have circular orbits.  

 the period of a planet does not depend on its mass.
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wrote...
#1
11 years ago
a planet travels faster when it is nearer to the Sun and slower when it is farther from the Sun.
all the others are wrong
wrote...
#2
11 years ago
each planet moves around its orbit and sweeps out equal areas in equal intervals of time.there is longer distance near the perigee and shorter distance near the apogee.hence the speed is maximum at perigee and minimum at apogee.
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michaelsimsmichaelsims
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#3
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11 years ago
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#4
11 years ago
All are true except that planets have circular orbits.
wrote...
#5
11 years ago
All true, except the circular orbits.
Kepler's Law was necessary to describe ELLIPTICAL
orbits.
Think about it. The field strength decreases with
the square of the distance, so the velocity required
to hold an orbit also decreases.
The orbital speed for any given orbit is mostly dependent
on the mass of the sun, (the planet is so small in
comparison that its mass can be neglected
for most purposes.)
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