Independence of Motion Accessory

Independence of Motion Accessory

Education Level:



Independence of Motion Accessory


Use this accessory for our projectile launchers to explore the independence of vertical and horizontal motion of a projectile.


The Independence of Motion Accessory enables the Vernier Projectile Launcher to perform the classic experiment where one ball is dropped as another is projected horizontally. The balls strike the floor simultaneously.

A built-in level makes leveling the accessory fast and easy. One ball is placed in the barrel, which causes a pin to extend. A second, drilled ball is placed on the extended pin. When the first ball is ejected from the Projectile Launcher, the pin retracts and the second ball falls. Both metal and plastic balls are provided.

What's Included

  • Independence of Motion Accessory
  • Solid Steel Balls (2)
  • Drilled Steel Balls (2)
  • Solid Plastic Balls (2)
  • Drilled Plastic Balls (2)



5-year limited warranty

Replacement Parts

Contact Us

Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications.

* AP and Advanced Placement Program are registered trademarks of the College Entrance Examination Board, which was not involved in the production of and does not endorse this product.

** The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.