Qualitative Anatomical AnalysisA standing long jump is a distance jump from a standing position. It can be divided into four time phases: countermovement, propulsion, flight and landing. In the countermovement phase the subject crouches to load and extends the shoulders and arms. In the propulsion phase, the goal is to generate enough force to propel the body forward. The person must stand upright with full extension of the trunk, hips and knees. Then, the person flexes at the hip and knee, which results in the rotation of the trunk forward. Next, the arms are slightly flexed to hyperextension, to full flexion. Before the flight phase, the body reaches maximum extension. The flight phase begins as soon as the feet leave the ground. During this phase, the body remains in full extension or may become hyperextended. Towards the end of the flight phase, the trunk rotates forward in an anterior direction along with a slight flexion of the hip and knee just before landing. During the landing phase, the knees and hips are in maximum flexion and forward rotation of the trunk. There is also arm movement by moving both arms in the vertical direction to improve the jumping distance. At the beginning of the jump, the arm swings forward, and during landing it swings back and forth. This skill involves jumping in the sagittal plane around the transverse axis. It consists of the hip, knee, ankle and shoulder joints. In the preparation phase for propulsion, the subject has the knees and hips flexed which will need to be straightened by the strength of the corresponding joints such as the hinge joint of the knee joint. The hip joint is a ball joint that supports the weight of the body and allows the jumping movement. During the...... middle of the sheet......the weight of the object/object multiplied by the speed at which the subject/object is moving, squared. In order for the long jumper to increase the change in kinetic energy, he must produce a greater velocity. This would mean that he/she should produce a quick and efficient transition from flexion to extension at the start of the long jump. Potential energy is defined as the amount of energy that is "stored" within a subject or object. The mathematical formula for potential energy is PE=mgh, where “m” mass, “g” is the acceleration due to gravity (9.81 m/s), and “h” is height. The long jumper has the greatest amount of potential energy when he is at the peak of his flight phase. To increase the amount of change in potential energy the athlete must reach the maximum height possible. This allows the athlete to fall longer, thus achieving greater distance.