How did Nude Descending a Staircase (No. 2) create an effect of movement?

Marcel Duchamp's Nude Descending a Staircase (No. 2) achieves its sense of movement through the use of successive superimposed images.12

While Duchamp experimented with Cubism, he eventually found that style to be too static for his goals. Consequently, he moved toward a nonobjective expression of motion. The resulting painting, which critics identified as having Cubo-Futurist qualities, utilizes harsh angles and stark colors to depict the figure's descent. Although the work shares visual characteristics with Futurism—a movement specifically concerned with capturing speed and dynamism—Duchamp maintained that he was unaware of the Futurist style at the time he created the piece.21