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44 Cards in this Set
- Front
- Back
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What is kinesiology?
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Study of human movement
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What is biomechanics?
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study of response of biological system to force
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Pythagoras Theorem is:
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A^2 + C^2 = B^2
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Sin
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O/H
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Cos
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A/H
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Tan
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O/A
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Sine Formula
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a/sinA = b/sinB = c/sinC
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Cosine Formula
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a^2 = b^2 + c^2 - 2bc(cosA)
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Right Triangle
- Have one angle want the other angle |
subtract from 90
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Right Triangle
- Have 2 sides want the 3rd |
Pythagoras Theorem
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Right Triangle
- Have 2 sides want an angle |
Trig functions
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Right Triangle
-Have an angle and a side want other side |
Trig functions
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NON right triangle
Have 2 sides and the angle between them |
COS formula - side
SIN formula - other angles |
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NON right triangle
Have 2 sides and an angle opposite one of them |
SIN formula - other angle
subtract from 180 = angle SIN formula - other side |
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NON right triangle
Have 2 angles and one side |
Subtract from 180 - 3rd angle
SIN formula - other 2 sides |
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Scalar has and examples
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magnitude: temp, mass, energy, speed
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vector has and examples
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magnitude and direction: velocity, acc, force, torque, momentum
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Resultant vector components
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Fx and Fy
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Resultant vector Fx
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Fx = FCOSa
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Resultant vector Fy
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Fy=FSINa
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positive and negative vector quadrants
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++, +-, --, -+
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Vector addition = resultant force
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add x and y
F2 = a2+b2 a= tan-1(y/x) |
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What is kinetics?
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study of forces
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what is kinematics?
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study of motion (acceleration)
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What are the 3 types of motion
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translation, rotation, curvilinear
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What is the axis of rotation
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line about which an object rotates relative to another
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The plane of rotation is __ to the axis of rotation
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perpendicular
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joints have a combination of
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rotation and translation
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displacement is
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change of position "translation"
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Velocity is
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rate of change of position "translation / time"
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acceleration is
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rate of change of velocity
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What is Static movement
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study of bodies at rest or constant velocity
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What is Dynamic movement
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study of bodies in motion from inertia and acceleration
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What is force
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action of an object against another
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Internal force
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acts within the system
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external force
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acts outside the system
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Newton's first law
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object at rest or uniform motion will remain until acted on by another force
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Newton's 2nd law
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object will accelerate f/m
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Newton's 3rd law
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every action has equal and opposite reaction
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What is inertia?
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resistance to change in motion (acceleration)
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moment of inertia
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the resistance offered to angular acceleration
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mas close to axis will have __ moment of inertia and is __ to start/stop
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low / easy
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mass far from axis will have __ moment of inertia and is __ to start/stop
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high / difficult
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gravity is
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force on object by earth and acceleration caused by gravity
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