PEDS302 Chapter Notes - Chapter 3: Vertical Jump
23 Feb 2015
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Newton"s first law: an object at rest stays at rest and an object in motion stays in motion until acted upon by a force. What must the child learn about inertia? o. What must the child learn about momentum? o. Newton"s third law: to every action, there is an equal and opposite reaction, when you push on something, it pushes back on you, oppositional movements and directional force. Force generation aided by planer movements: use force in the plane of motion where you want to move yourself or an object, avoid rotational movements that reduce force in the desired plane. Increase relative length (fully extend it at release or contact: why not keep limb extended throughout? o. Force and time: to make an object move, increase force application for a give time, ex) vertical jump, to make an object stop, increase time over which a give force is applied, ex) soft landing in gymnastics.
