7. Friction, Inclines, Systems

$\text{Which of the following lists all the main types of friction encountered in classical mechanics?}$

When tightening a head bolt, approximately what percentage of the applied turning torque is typically lost to kinetic friction rather than used to actually stretch the bolt?

Which of the following methods would most effectively reduce the kinetic friction experienced by a person sliding down a water slide?

Which type of friction is primarily responsible for keeping a pile of rocks from falling apart?

Which of the following lists correctly identifies the four main types of friction encountered in physics?

Which of the following lists all the main types of friction encountered in physics?

Which type of road surface would exert the least amount of $F$_k (kinetic friction) on a car's tires as it moves at constant speed?

Which of the following factors can affect the amount of kinetic friction acting on an object moving on a solid surface?

Which of the following correctly identifies the three main types of friction and the situations in which each applies?

Which of the following lists correctly identifies the four main types of friction encountered in physics?

How does $kinetic friction$ affect the motion of a roller coaster as it moves along the track?

Which of the following conditions reduces traction even more than rain when driving on a road surface?

Which of the following may result from an increase in kinetic friction between two surfaces?

Why does a moving object come to a stop when it moves across a surface with kinetic friction?

In the context of kinetic friction, in which direction does the frictional force act relative to the motion of an object?