True: Frictional force is always opposite the movement direction, Frictional force is the force produced when 2 surfaces are in contact with one another, Mass of an object affect frictional force, Type of surface affect frictional force, Frictional force has advantages and disadvantages, False: Frictional force is always same direction with the movement direction, Frictional force is the force produced when 2 surfaces are not in contact with one another, Mass of an object does not affect frictional force, Type of surface does not affect frictional force, Frictional force only has disadvantages,

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