NOTE: These lectures were recorded before the current workbook was revised, so the page numbers that I cite in the lectures won't match. Go by what is indicated in the blue type above each image of the lecture.
(1) Page 83
(2) Page 83 (continued)
(3) Page 84
(4) Here's some additional practice, along with a guide in case you get stuck.
Read these "Notes on Gravity" first before watching the next two videos.
If you can print it, do so.
(Don't just skim it in 30 seconds-read it!)
You'll need to print this worksheet for the first video.
(It's page 45a from the Astronomy Lab Manual)
You'll need to print this worksheet for the second video.
(Pages 41, 42, 44, 45 from the Astronomy Lab Manual)
Now that we've had a more in-depth discussion about gravity - and Newton's cannon - here's a humorous short story from the Golden Age of science fiction. Enjoy!