Author Question: The Early Bird communication satellite hovers over the same point on Earth's equator indefinitely, ... (Read 104 times)

BrownTown3 · **on:** Jul 29, 2018

The Early Bird communication satellite hovers over the same point on Earth's equator indefinitely, because

A) other forces than Earth's gravity act on it.
B) it pulls as hard on Earth as Earth pulls on it.
C) it is beyond the main pull of Earth gravity.
D) it is kept aloft by ground control.
E) its orbital period is 24 hours.

Question 2

If a satellite's radial velocity is zero at all times, its orbit must be

A) parabolic.
B) elliptical.
C) circular.
D) geosynchronous.