Goal 2 - Linear Motion

Goal 3 - 2D Motion

Goal 4 - Forces and Newton's Laws

Goal 5 - Impulse and Momentum

Goal 6 - Energy

Goal 7 - Wave Motion and Light

Goal 8 - Static Electricity and Circuits

Goal 4: The learner will develop an understanding of forces and Newton's Laws of Motion.

Objective 7: Assess and calculate the nature and magnitude of gravitational forces (Newton's Law of Universal Gravitation).

Websites

Forces in the Human Slingshot Ride from Newton's Apple
http://www.newtonsapple.tv/TeacherGuide.php?id=1426

Universal Gravitation
http://www.glenbrook.k12.il.us/gbssci/phys/Class/circles/u6l3a.html

Bending Spacetime in the Basement

Two scientists claim to have reproduced Cavendish's experiment to demonstrate the attractive nature of gravity with conflicting results. Read a description of each experiment (with videos). The third link describes the descrepancies.

http://www.sas.org/tcs/weeklyIssues_2005/2005-07-01/feature1/index.html

http://www.fourmilab.ch/gravitation/foobar/

http://en.wikipedia.org/wiki/Talk:Cavendish_experiment

From Apples to Orbits: The Gravity Story
http://library.thinkquest.org/27585/

Lesson Plans

Measuring the universal constant G
http://www.iit.edu/~smile/ph8615.html

Gravitational Forces
http://www.gsu.edu/~mstjrh/gravity.html

Measuring the Mass of the Earth
http://lpc1.clpccd.cc.ca.us/lpc/harpell/astro30/eploregravity.htm