Khan Academy
Khan Academy: Newton's Law of Gravitation: Would a Brick or Feather Fall Faster?
Presents an analysis of a problem where a brick and a feather are dropped on the moon to see which would hit the ground sooner. This is compared to the gravity on the Earth, where the air resistance on the objects would produce a...
Khan Academy
Khan Academy: Newton's Law of Gravitation: Space Station Speed in Orbit
The speed necessary for the space station to stay in orbit is investigated in this video.
Khan Academy
Khan Academy: Newton's Law of Gravitation: Introduction to Gravity
Basics of gravity and the Law of Universal Gravitation. [15:42]