The Speed of a Comet in an Elliptical Orbit About

question 50

Multiple Choice

The speed of a comet in an elliptical orbit about the sun:

• A)decreases while it is receding from the sun
• B)is constant
• C)is greatest when farthest from the sun
• D)varies sinusoidally with time
• E)equals L/(mr), where L is its angular momentum, m is its mass, and r is its distance from the sun

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