Question

The force of friction between two bodies is―
a) Parallel to the contact surface.
b) Perpendicular to the contact surface.
c) Inclined at 30° to the contact surface.
d) Inclined at 60° to the contact surface.

Please answer my question.......​​

Answer 1

Answer:

Option A  is correct.

Friction force acts opposite to the motion of body and acts parallel to the contact surface.