how does an object in circular orbit differ from an object in elliptical orbit?

Question

how does an object in circular orbit differ from an object in elliptical orbit? (choose as many as apply)

A. the speed of an object in a circular orbit is constant but the speed of an object in elliptical orbit varies

B. the sum of the kinetic and potential energy of an object in circular motion is constant but it varies for an object in ellipitical orbit.

C. the potential energy of an object in circular motion varies from point to point in its orbit but the potential energy is constant at all points in an ellipitical orbit

D. A circular orbit has two foci; and ellipitical only has one

Explanation / Answer

A. the speed of an object in a circular orbit is constant but the speed of an object in elliptical orbit varies

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