Sport/activity Based Analysis

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rotate their individual body segments during the various aspects of the skill

For example, when elevating the arms push the body forward over the bar

Angular Motion - Angular Momentum

Remains constant while the athlete is in the air

Athlete travels with the constant angular momentum when free in the air

An athlete must have the right amount of momentum in order to clear the bar

This cannot be changed after the athlete leaves the ground

Part B: Joint and Muscle Analysis

Joint and Muscle Analysis

Part A:

Neck: Will follow the “J” shape being made to the jump

Shoulder: Move in sync with the elbows

Elbow: Remain at the side going back and forth to gain speed

Wrist: Go up and down in with the direction of the elbow

Torso: Bent though it with change like spine throughout the “J”

Hip: Remain on an angle through out the start up

Knee: Stay bent and are constant in moving high up reaching just below the pelvis

Ankle: Dominant foot will be the one you jump off from where the other will follow behind, before starting place dominate foot in front. Typically the one that is opposite to dominate hand

Other joints important to task (Spine): Spine is bent at the beginning of the jump will change throughout the shape of the “J”

Part C:

An application of two of Newton’s Laws

Newtons First Law - An object in motion will stay in motion unless acted

upon by an external force

Whilst a high jumper runs they will remain at rest until a net force acts upon it such as the high jumper lifting off to go over the bar. When the high jumpers foot pushes on the ground, the earth will push back sending them forward or up.

Newtons Seconds Law - The acceleration of an object is determined by the size of the net force


The force exerted while high jumping causes you to lift off the ground and go over the beam. Your acceleration directly related to the applied force and the net force which is proportionally related to your mass

Newton’s Third Law- for every action there is an equal and opposite reaction

        A high jumper has to take off with as much force as possible so that the ground will push the jumper up high, as described in Newton’s Third Law. Olympian Jesse Williams exerts 1200 lbs. of force on the ground during take off. This powerful step converts the force generated from horizontal velocity to gravitational potential energy or height.