Which of the following statements about friction is NOT correct?
A. The force of kinetic friction is less than the force of static friction B. The force of kinetic friction between two surfaces is independent of the areas in contact provided the normal reaction is unchanged C. The force of rolling friction between two surfaces is less than the force of sliding friction D. The angle of friction is the angle between the normal reaction and the force of friction E. Friction may be reduced by lubriction
