8. Centripetal Forces & Gravitation

A satellite orbiting the moon very near the surface has a period of 110 min. What is free-fall acceleration on the surface of the moon? Astronomical data are inside the back cover of the book.

For a satellite to be in a circular orbit 890 km above the surface of the earth, what orbital speed must it be given?

On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected into an orbit 705 km above the earth's surface. Assume a circular orbit. How many hours does it take this satellite to make one orbit?

In its orbit each day, the International Space Station makes 15.65 revolutions around the earth. Assuming a circular orbit, how high is this satellite above the surface of the earth?

In the context of satellite motion around $\mathrm{Earth}$, which of the following best represents the distance of a satellite from the center of the $\mathrm{Earth}$?

Which of the following best explains how engineers keep satellites in orbit around the $Earth$?

In the context of satellite motion and reference frames, which statement best describes the motion of the $\mathrm{Sun}$?

Which of the following correctly describes the relationship between the orbital speed $v$ of a satellite in a circular orbit of radius $r$ around the Earth (mass $M$) and the gravitational constant $G$?