The image of free-falling bar has been recorded to study the effect of the motion on its observed length. This moving bar image is analysed using the Tracker software to determine its length and the end bar's position. An elongated appearance of the bar has been observed with movement. This effect relies on the speed and the exposure time during image recording. When recording at 25 fps with exposure time of 0.04 s, the 33 cm bar's apparent size becomes (54.4 ± 0.6) cm at speed of 5.88 m s[superscript -1]. The elongation is shorter with a shorter exposure time.