Ключевые слова: activity, aim, ball, bar, begin, beginning, billiard, blur, blurred, brake, club, collide, collision, competition, cue, fast, felt, first, game, green, hit, hobby, indoor, leisure, many, motion, motionblur, move, movement, night, nightclub, physics, play, pool, pub, rack, recreation, recreational, shot, sport, start, stick, stroke, table, triangle,