
Review of Short Phrases and Links 
This Review contains major "Areal Velocity" related terms, short phrases and links grouped together in the form of Encyclopedia article.
Definitions
 Areal velocity is the rate at which area is swept out by a particle as it moves along a curve.
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 Areal velocity is the rate at which area is swept by the position vector of a point which moves along a curve.
 Areal velocity is the area (shown in green) swept out per unit time by a particle moving along a curve (shown in blue).
 The areal velocity is constant for a central force.
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 Areal velocity is the rate at which area is swept out by a particle as it moves along a curve.
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 For a single particle, areal velocity provides a geometrical interpretation of angular momentum.
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 Angular momentum is conserved if and only if the areal velocity is a constant vector.
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 In some problems, the magnitude of the areal velocity is constant while its direction changes.
 Areal velocity is the rate at which area is swept by the position vector of a point which moves along a curve.
 Areal velocity depends on a reference point: the origin of the coordinate system of the position vector, which is a function of time.
Areal Velocity
 Figure 1. Areal velocity is the area (shown in yellow) swept per unit time by a particle moving along a curve (shown in blue).
 Kepler's second law of planetary motion is a statement of conservation of areal velocity of the orbiting planet with respect to the Sun.
 In some problems, a component of angular momentum is conserved, and in these cases, the corresponding component of areal velocity is constant.
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Categories
 Particle Moving
 Unit Time
 Algebra > Linear Algebra > Vectors > Position Vector
 Direction Changes
 Orbiting Planet

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