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Leading cause of death and disability among Children and adults in the U.S?
Injuries
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Define work?
Work is defined as force acting over distance
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Define kinetic energy
The energy of a moving object
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Potential energy
Is the product of mass force of gravity, and height and is mostly associated wit the energy of falling objects
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Newtons first law?
Objects at rest tend to stay at rest and objects in motion tend to stay in motion unless acted on by some force
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Newtons second law?
Force (F) equals mass (M) times acceleration (A), that is F=MA
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What are the 4 types of Crashes?
Frontal, lateral, rear-end and rollover
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what are the 3 events that occur during collisions?
- 1. The collision of the car against another car, a tree, or some other object
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- 2. The collision of the passenger against the interior of the car
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- 3. The collision of the passenger's internal organs against the solid structure of the body
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Rear-end collisions cause what type of injuries?
Whiplash - Cervical spine - Brain, injuries.
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What is the #1 death associated to motor vehicle crashes
Lateral impacts (T-bones)
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A fall from more then what height is considered significant?
15' or 3x the pt's height
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What are the factors to consider when dealing with a fall?
- 1.The height of the fall
- 2.The surface struck
- 3.The part of the body that hit first, followed by the path of energy displacement
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Bullets cause damage with what function?
Speed
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Whats the difference between blunt trauma and penetrating trauma?
- Blunt trauma doesnt break the skin
- Penetrating trauma punctures the skin
- Blunt trauma is the #1 largest cause of death
- Penetrating is #2
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Traumatic injuries occur when?
When body tissues are exposed to energy beyond there tolerance.
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