A background check is required of all applicants for the above licenses or. certificates. The following is required prior to going to Greeley/Weld Criminal. Justice Records Section, 1551 N. 17th Avenue, Greeley, CO for the background. check.
Friction is a force that acts against a moving object to slow it down. A type of friction is air resistance. Friction opposes the direction in which the object is moving, causing the object to decrease in speed, or stop all together.
1 However, if the force gets bigger than the maximum static friction, it makes the object accelerate (begin to move). 2  The thing will begin to accelerate as soon as the static friction is less than the force pushing on it.