The cue stick, the table and the other pool balls are external forces that acts upon the cue ball to change the constant velocity and direction. Force is dependent on mass of the objects. Could someone be so kind and tell me what they are and maybe give me some examples. Law of inertia. The cue stick, the table and the other pool balls are external forces that acts upon the cue ball to change the constant velocity and direction.
Force is dependent on mass of the objects.