Qualitative anatomical analysisA standing broad jump is a distance jump from a standing position. It can be divided into four temporal phases: countermovement, propulsion, flight and landing. In the countermovement phase, the subject squats 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 with full extension of the trunk, hips and knees. Next, the person flexes the hip and knee, causing the trunk to rotate forward. Then the arms become slightly flexed until hyperextension, until full flexion. Before the flight phase, the body goes into full extension. The flight phase begins as soon as the feet leave the ground. During this phase, the body remains in full extension or can become hyperextended. Toward the end of the flight phase, the trunk rotates forward in an anterior direction accompanied by slight flexion of the hip and knee just before landing. During the landing phase, the knees and hips are in maximum flexion and rotation of the trunk forward. There is also arm movement by moving both arms in the vertical direction to improve jumping distance. At the start of the jump the arm swings forward and when 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 propulsion preparation phase, the subject has flexed knees and hips which will need to be straightened by the force of their corresponding joints such as the hinge joint at the knee joint. The hip joint is a ball and socket joint that supports the weight of the body and allows for the jumping movement. Middle of paper...... weight of the project/object multiplied by the speed at which the subject/object moves, squared. For the broad jumper to increase the change in kinetic energy, it must produce a faster velocity. This would mean that he would have to make 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 “stored” in a subject or object. The mathematical formula for potential energy is PE=mgh, where “m” is the mass, “g” is the acceleration of gravity (9.81 m/s), and “h” is the height. The broad jumper has the greatest amount of potential energy when at the top of the flight phase. In order to increase the amount of potential energy change, the athlete must reach the greatest height possible. This allows the athlete to fall longer, thus gaining additional distance.