Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Forces Playground 螢幕截圖

iPad

iPhone

About Forces Playground

This great App shows how forces affect objects in space! Drop objects into the scene and put forces in the scene to affect the objects!

Demonstration of gravity, anti-gravity and vortex forces with images dropped in to the screen that get attracted to the forces when the users touches. The user can select Vortex, Gravity or Anti-Gravity forces and watch the fun in this physics simulation!

Vortex will cause the objects on screen to rotate around. The user can increase or decrease the vortex forces on screen so the rotate left, stop or rotate right. The user can also increase or decrease the gravity forces on screen.

Gravity will attract objects on the screen. Anti-gravity will repel objects on the screen.

The user can increase or decrease the mass of the colored squares on screen by swiping up or down. Reset color mass to defaults by swiping left.

Clear the screen by swiping right.

Show or hide forces by pressing the buttons on the top of the screen.

Special Thanks to NASA for the public domain images used for the Space pictures!