The combat controller training program is as follows: Combat Control Screening Course, Lackland Air Force Base, Texas This 10-day screening course focuses on physical fitness with classes in sports physiology, nutrition, basic exercises, CCT history and fundamentals. Combat Control Operator Course, Keesler AFB, Miss.
Static or dynamic friction always act in a direction opposite to the impressed force. The dynamic friction does not need in any force. It is realy directed in opposit to the velosity. And the static friction can never be without the shearing force and it is always directed in opposit to it. However, you are right - dynamic friction forces can or slow down the movement of the body or accelerate it.
Friction is a Force which opposes Motion. The rollers keep the block off the ground so it can t scrape and because the rollers can turn they don t scrape as much on the block. The end result is that it is much easier to move the block on the rollers because the Friction has been reduced.riction is a Force which opposes Motion. The rollers keep the block off the ground so it can t scrape and because the rollers can turn they don t scrape as much on the block. The end result is that it is much easier to move the block on the rollers because the Friction has been reduced.