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.
The factors affecting sliding friction include the roughness of the surfaces in contact. That includes both of the object being slid and the surface on which it is sliding. â¦ The mass of the object being slid is also a factor. To some extent, any changes in either contact surface as the sliding motion occurs will affect sliding friction. There is generally a coefficient of friction that takes all of these factors into account, both in the static range and in the kinetic range of friction.