# MrFlint.com

The online companion to your favorite class.

### Monday, January 22

• A Tour of the Solar System
• Relative distances in space - planetary and stellar mean distances
• Gravity as a centripetal force
• Ptolemeic and Copernican systems in a historical perspective
• Brahe and Kepler's contribution to planetary motion

### Monday, January 29

• Kepler's three laws of planetary motion
• 1st law demonstration with film cans on white board
• 2nd law demonstration with equal area/equal time law
• 3rd law example: Orbital period of another planet
• Derivation of time and radius laws
• Some other Kepler's Third Law examples
• Geosynchronous satellite orbital radius and its comparison to the orbital altitude
• Discovering exoplanets: A planet is found to orbit another star with a period of 4.5 years at a distance of 18 AU. We find that another planet orbits at a radius of 9 AU. What is that planet's orbital period?
• P. 195, 41-44 due
• Go over problems 41-44 together
• Newton's perspective on orbits as projectile motion
• Intro. to Universal Law of Gravitation
• Some more Universal Gravitation examples
• Force between a person and a stapler 2 m apart
• Force between a person and the Earth
• Force between the Earth and Sun
• Intro. to Gravity Lab
• P. 195, 32-37 due
• Hand in problems
• Collect gravity lab data
•

### Tuesday, February 6

•
• Calculating g as an acceleration due to gravity and as a field strength
• velocity in orbit as ratio of circumference to period AND from Fc=Fg
• Work on gravity lab and problems
•
• Gravity Lab due
• Newton's Version of Kepler's Third Law
• Examples of Newton's Version of Kepler's Third Law
• Return/review problems and lab
• More orbital example problems
• P. 196; 50-54 due
• Go over problems together in class
• Orbital Problems due
• Hand out printed solutions instead of going over on the board because of a shortened class period.
• Chapter 8 Review due
• Go over problems together
• Any questions?

• ### Thursday, February 8

• Falcon heavy launch and impulse

• ### Friday, February 9

• Chapter 8 Test

## Physics 1 Honors - Chapter 8

Forces and Motion in Two Dimensions

Unit Outline with Standards

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