Lesson: Kepler’s Laws of Planetary MotionPhysics
In this lesson, we will learn how to use Kepler’s first, second, and third laws of planetary motion to determine the dynamics of elliptical orbits.
Sample Question Videos
The asteroid Eros has an elliptical orbit about the Sun, with a perihelion distance of 1.13 AU and aphelion distance of 1.78 AU. What is the period of its orbit?
An asteroid has speed 15.5 km/s when it is located 2.00 AU from the sun. At its closest approach, it is 0.400 AU from the Sun. What is its speed at that point?
A geosynchronous Earth satellite is one that has an orbital period of precisely one Earth day. A satellite in a geosynchronous orbit remains directly above a particular point on Earth’s surface throughout its orbit. What is the orbital radius of such a satellite if a day is considered as s? Take the radius of Earth to be 6,370 km.