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Circular Motion Applets

Alien Invasion [game]

If you cut the string of a stone moving in circular fashion, where does ball go?

4 Star
Relationship between linear velocity and angular velocity

Notice that both bugs have the same angular velocity but different linear velocities

4 Star
       
Centrifugal Force A common myth treated in cartoon fashion by xkcd.com 5 Star
 
Satellite motion
Try to put the satellite into orbit
3 Star
As Above
3 Star
As Above
3 Star
As Above
3 Star
Why doesn't the space shuttle fall to Earth? Cool explanation. youtube. one minute 4 Star
Another viewpoint This time from an astronomer. youtube. Two minutes 4 Star
 
Slingshot Effect
Applet showing how a properly directed spaceship can pick up energy from a planet.
3 Star
You have to work out where to aim Kevin in order to hit a target when there is a planet in the way. 
4 Star
What???
Check out the wonderful paper "The Effects of Peanut Butter on the Rotation of the Earth" which is published in the Annals of Improbable Research.
3 Star