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A planet on a perfectly circular orbit is timed at many points along the path. Its speed would be:
AHalving
BRising
CConstant
DDoubling
Answer & Solution
Correct answer: C. Constant
1. The distance to the Sun never changes.
2. The sweeping line stays the same length.
3. The speed would be constant.
_Source: OpenStax Astronomy 2e, Chapter 3, Orbits and Gravity._
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