Biomechanics - Is the general study of forces & their effects
Kinematics - Is the study of energy transfer as it applies to ID'ing actual or potential injuries
Mechanism of Injury (MOI) - Is how external forces are transferred to the body, resulting in injury
Newton's 1st Law of Motion - A body ...
Biomechanics - ✔✔Is the general study of forces & their effects
Kinematics - ✔✔Is the study of energy transfer as it applies to ID'ing actual or potential injuries
Mechanism of Injury (MOI) - ✔✔Is how external forces are transferred to the body, resulting in injury
Newton's 1st Law of Motion - ✔✔A body @ rest, stays @ rest unless acted on by an outside force
Newton's Second Law - ✔✔The acceleration of a body is parallel & directly proportional to the net
force acting on the body, is in the direction of the net force, & is inversely proportional to the body's
mass
Force equals mass times acceleration
(It takes more force to move a heavy object vs a light object)
Newton's Third Law - ✔✔For every action there is an equal and opposite reaction
Law of conservation of energy - ✔✔Energy cannot be created or destroyed
When mass is doubled - ✔✔Energy is doubled as well
When velocity is doubled - ✔✔Energy is quadrupled
Mechanical energy - ✔✔The direct impact of an object, such as in a car collision or a pot to the head
Thermal energy - ✔✔The transfer of heat energy, such as a burn from a liquid or hot object like a pot
, Chemical energy - ✔✔Heat energy from active chemical substances, such as household cleaners or
acids
Electrical energy - ✔✔Energy transferred from light sockets, power cord, or lightning
Radiant energy - ✔✔Energy transferred from my blast, sound waves, radio activity, are the common
sunburn
External Energy Forces
Deceleration - ✔✔These include forces the current for my sudden stop in the bodies motion
External Energy Forces
Acceleration - ✔✔These forces are not as common, and result from a sudden and rapid onset of
motion. Think of whiplash when you are rear ended
External Energy Forces
Compression - ✔✔This occurs when a person is crushed by or between objects, such as between a
dashboard and a car seat
Internal forces
Compression - ✔✔The ability of the tissue to resist crush injury or force
Internal Forces
Tension - ✔✔The ability to resist being pulled apart when stretched
Internal forces
Shearing - ✔✔The ability to resist a force applied parallel to the tissue
Blunt trauma - ✔✔The result of a broad energy impact across a large surface area
Penetrating trauma - ✔✔Energy that results in impalement at the point of impact. Injury potential
affected by the velocity of the object
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