The frictional force between two bodies?
A
exists only when there is relative motion or tendency for motion
B
acts so as to oppose the motion
C
depends on the normal reaction between the two surfaces
D
is relatively independent of the area in contact
E
has all of these characteristics
Verified Correct Answer: E.
Physical Principles & Numerical Solution
Frictional force is the opposing force that is created between two surfaces that try to move in the same direction or that try to move in opposite directions.
The main purpose of a frictional force is to create resistance to the motion of one surface over the other surface.
Source: WAEC / JAMB / NECO Classroom Archive (Record #29232)