Beginning April 1, 2019, VEX Robotics will begin collecting sales tax in compliance with the recent South Dakota vs. Wayfair ruling. To register as tax exempt, please submit your information to taxforms@vex.com. This must be completed prior to placing an order in order for it to be considered tax exempt.

Friction

VEX IQ Curriculum - Key Concepts


Friction

Friction is the force that resists motion through the rubbing of one object against another. It is a reaction force only. It occurs when two surfaces are in contact and a force is applied to a mass, causing the surfaces to slide against one another. If an object has no forces trying to cause motion, there is no friction. No applied force means no reaction force.