Physics

A communications satellite is moving at a constant speed in a circular orbit around Earth. At any given instant in time, what is the resultant force on the satellite?

A. zero
B. equal to the gravitational force on the satellite
C. equal to the vector sum of the gravitational force on the satellite and the centripetal force
D. equal to the force exerted by the satellite's rockets

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  1. zero. Gravity force equals centripetal force, zero net force.

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    bobpursley
  2. B

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