Here are some basic videos on gravitational force and fields. It Covers the equations, the units, and the general behavior of an attractive force like gravity and how it interacts with mass through field theory.

Read through my lecture notes on Universal Gravitation and Fields.

Work on WebAssign 7-1 and email any question you have.

I only got two questions this week. I didn't think that was worth making a video.

Timed Quiz on WebAssign. You have all weekend to take it.

Watch the original Cosmos: Harmony of the Worlds with Carl Sagan. This documents the humans races relationship with the star and its first real Astronomer who relied on facts and evidence, Johannes Kepler.

Graded work for the week

No more then one page summery of Johannes Kepler's life and accomplishments. Email it to me with the subject line “Kepler”

Have a great week,

Fernandez

Watch the video on planetary motion and Kepler's Law. Its a little dry, but it works through the derivations needed to do some calculations on orbital speed and shape, escape speed, gravitational energy, etc....

Work on Web Assign 7-2