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Orbital motion of artificial satellites: relationship between radius and speed

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I can describe changes to a satellite’s speed and velocity and explain what happens to its orbital radius if its speed changes.

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Artificial satellites orbit Earth because of the gravitational attraction between them. The speed of a satellite along its orbit around Earth is constant. The velocity of a satellite along its orbit around Earth constantly changes as it changes direction. The centripetal force on a satellite makes it accelerate and change direction, but not speed. To orbit in a stable orbit, the orbital radius of a satellite must change if its speed changes.

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