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Leading cause of death and disability among Children and adults in the U.S?
Work is defined as force acting over distance
Define kinetic energy
The energy of a moving object
Is the product of mass force of gravity, and height and is mostly associated wit the energy of falling objects
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
Newtons second law?
Force (F) equals mass (M) times acceleration (A), that is F=MA
What are the 4 types of Crashes?
Frontal, lateral, rear-end and rollover
what are the 3 events that occur during collisions?
- 1. The collision of the car against another car, a tree, or some other object
- 2. The collision of the passenger against the interior of the car
- 3. The collision of the passenger's internal organs against the solid structure of the body
Rear-end collisions cause what type of injuries?
Whiplash - Cervical spine - Brain, injuries.
What is the #1 death associated to motor vehicle crashes
Lateral impacts (T-bones)
A fall from more then what height is considered significant?
15' or 3x the pt's height
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
Bullets cause damage with what function?
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
Traumatic injuries occur when?
When body tissues are exposed to energy beyond there tolerance.