Kinesiology 2241A/B Lecture Notes - Lecture 7: Ground Reaction Force, Kinematics, Free Body
6 Sep 2016
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Document Summary
Kinetics is what makes things move as apposed to the movement itself. Kinetics is concerned with the relationship between the motion of bodies and its causes, namely the forces and torques. Without kinetics you can not have kinematics. Kinematics are the movements themselves, their efficiency and technique. Forces cause linear translation in the planes x, y, and z. Torques cause rotation whether it be roll, pitch or yaw. It all starts with force which is kinetics, this causes the acceleration, velocity, displacement and position which are all under kinematics. Force, its direction and its movement cause the movement to occur. Examples: buoyancy o o centripetal (force from rotation such as discus throws), External--forces acting on us from outside such as friction and gravity, a force that happens to your body. Kinematics can easily be seen but the forces generated are invisible, you can see their impact but not the force itself.
