Identify the direction of the friction force in the following cases:?

A. A book sitting on a table..





B. A box sliding on a horizontal surface..





C. A car making a turn on a flat road...





D. The initial motion of a machine part delivered on a conveyor belt in a assembly line.

















anybody can answer this question?? I need the answer by sunday Night.. thank's a lot..Identify the direction of the friction force in the following cases:?
A: downwards n upwards


B: downwards n fwd


C: centripetal centrifugal n gravity


D: rotatory, clockwise or anticlockwiseIdentify the direction of the friction force in the following cases:?
A) parallel to the surface of the table. If the table were PERFECTLY level, there would be no friction, but if the table had the smallest tilt to it, friction would be opposite the direction of motion





B) parallel to the surface, opposite the direction of motion





C) parallel to the surface of the road, toward the center of the turn





D) parallel to the surface, in the direction of motion