KINES 300 Lecture Notes - Lecture 2: Ground Reaction Force, Anterior Longitudinal Ligament, Anatomical Terms Of Motion

• School: American River College
• Department: Kinesiology
• Course: KINES 300
• Professor: Kiefer

Document Summary

Law of inertia- an object at rest tends to stay at rest and an object in motion tends to stay in motion, unless there is a force changing its current status. Inertia- the ability of an object to resist change. The greater the mass, the greater the inertia. Whiplash- body moves forward, head stays in same position hyperextension torque of cervical spine, damages to soft tissue structures (deep neck flexors, anterior longitudinal ligament, etc. ) Moment of inertia- ability of an object to resistant change in an angular movement. Law of action-reaction: for every action there is always an equal and opposite reaction. Ground reaction force- when you apply a force to the ground, the ground will generate a reaction force to you. The ground reaction force is equal in magnitude and opposite in direction to the force that the body exerts on the ground. Movements results from interaction of internal and external forces.