Standing Long Jump Lab Report

The purpose of this lab report is to examine a biomechanical endeavor; for the purpose of this lab it was a person performing a standing long jump, to analyze the horizontal and vertical components of position and velocity versus time and the time spent performing the jump. The jump was analyzed using still shots from a video of a male performing a standing long jump. Because photos were used to analyze the jump, adjustments had to be made to convert the measurements to real size. To do this, a calibration factor (CF) is used. CF=(Real length of calibration stick)/(Projected Length of calibration stick). The CF is used to convert distances measured in millimeters on the projected image to real-life distance in meters, or in the case of this lab, pixels to meters. The equation for velocity is change in displacement/change in time. Therefore, the time of each frame must be found. Seconds per frame is found by the equation, tf= 1/frames per second. Then this number can be multiplied by the amount of frames to give the time. My hypothesis was that the horizontal position component would get closer to the origin when the subject is jumping toward the origin, and the vertical position component would would be a bell curve. My hyposthesis for velocity would be that the horizontal component would be constant and the vertical component would increase as the subject jumps and

The results show in figure 2 that the velocity in the horizontal direction remained negative throughout the jump and rapidly decreased at first, raised, and then decreased again. The velocity in the vertical direction rapidly increases as a positive velocity, decreases into a negative velocity, and then increases again but still in a negative velocity. The figures and tables are attached.