# biomechanics.txt

 The flashcards below were created by user jpowell22 on FreezingBlue Flashcards. What involves the use of tools of mechanics, the branch of physics that analyzes the action of forces, in the study of anatomical and functional aspects of living organisms? biomechanics What is statics? STILL; bodies at rest or in uniform motion What is dynamics? MOVING; bodies in motion or a body accelerating or decelerating Dynamics can be classified as what 2 things? kinematics, kinetics What is the geometry of motion? kinematics What is the study of forces (acting on movement)? kinetics Kinematics has 4 categories, what are they? 1.displacement2.velocity3.acceleration4.deceleration What is displacement? distance traveled from point A to point B What is the speed? (displacement/time) velocity What is the rate of increase in speed? acceleration What is the rate in the decrease of speed? deceleration What is osteokinematics? movement of bones What is arthrokinematics? movements of joints Internal and external forces are part of what? kinetics What are some examples of external forces? gravity, friction, barometric pressure, wind and water resistance What are some examples of internal forces? muscles/soft tissues(swollen, etc..), friction (bone surface, synovial fluid) What 3 things are needed to have a vector quantities? 1. a point of application2. an action line and direction3. a magnitude (intensity) What has both magnitude and direction? vector quantity What has magnitude only? scalar What is another term for intensity? magnitude What is another name for linear motion? translatory motion What type of motion has each point that moves through the same distance at the same time in parallel paths? linear (translatory) motion What is rectilinear motion? jumping up; moving or forming a straight line What kind of motion moves in a curved line? curvilinear What is another name for angular motion? rotary motion What is angular (rotary) motion? has an axis or point and everything else moves around the point What kind of motion is chaotic and has no pattern to it? general motion What doe linear kinematics of the human body involve? study of shape, form, pattern, and sequencing of linear movement through time What are 2 examples of linear kinematics? scalar, vector quantity What is a scalar quantity? magnitude only, can be represented by a certain point; has certain length, are, or number (drove 70 miles, weighs 165 lbs) What is a vector quantity? direction and magnitude Distance is what quantity? scalar (10ft, 20ft etc..) What type of quantity is displacement? vector (has a start/end point, change in position) Scalar/vector? Patient ambulated 12 feet. scalar Scalar/vector? Patient ambulated 12 fet from the bed to the door. vector What type of quantity is better/more descriptive? vector..use displacement instead of just distance What is speed? movement, how fast, less descriptive What is displacement/time, acceleration and deceleration? velocity Linear kinetics of the human body has to deal with what? Newtons laws What is newtons 1st law? law of inertia What law states a body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state? 1st law What is the property of an object that makes it resist both the initiation of motion and a change in motion? inertia What is inertia? what you have to overcome in order to make a movement happen What are some examples of inertia? grippy stuff on bottom of hospital socks (increased inertia makes it harder to move), whiplash The law of acceleration is which law? 2nd law What does the 2nd law state? an object will only accelerate if a force acts on it Acceleration is inversely proportional to what? mass (the bigger something is the lower the acceleration; kick ball, bowling ball) When a force acts upon an object it is proportional to what? the acceleration Force is directly proportional to what? acceleration What is newtons 3rd law? law of reaction What does the law of reaction state? for every action, there is an equal and opposite reaction Authorjpowell22 ID105486 Card Setbiomechanics.txt Descriptionlecture 3 Updated2011-09-30T23:01:40Z Show Answers