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Eagle Pak 2.1 - Vocabulary
This set covers some vocabulary from the first section of the second unit of Eagle Pak.
21
Fitness
9th Grade
09/24/2013

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Term
Biomechanics
Definition
-the science concerd with internal and external forces acting on the body and the effect produced by those forces
Term
Kinesiology
Definition
-the study of human motion (anatomical, mechanical, and muscular nervous system)
Term
Velocity
Definition
-the measurement of a body's motion in a defined direction (often related to speed)
Term
Force
Definition
-strength or energy by which work is performed
Term
Acceleration
Definition
-the rate in which velocity increases with the respect of time
Term
Mass
Definition
-the amount of matter in a body
Term
Work
Definition
-the distance and direction at which force is applied to the body
Term
Energy
Definition
-the capacity of a body to perform work
Term
Kinetic Energy
Definition
-the energy a body has when it is motion
Term
Potential Energy
Definition
-the energy that accrues because of the position a body occupies relative to the earth's surface
Term
Gravity
Definition
-a natural force that pulls a body towards the center of the earth
Term
Center of Gravity
Definition
-the center of weight within a body
Term
Rotary Motion
Definition
-movement about a center of rotation (axis)
Term
Linear Motion
Definition
-movement in a straight line from one point to another
Term
Newton's First Law
Definition
-(inertia)
-a body at rest will remain at rest and a body in motion will remain in motion at the same speed and in the same direction until acted upon by an outside force
Term
Newton's Second Law
Definition
-(acceleration)
-a change in velocity of an object is directly proportional to the force producing it and inversely proportional to its mass
Term
Newton's Third Law
Definition
-(action and reaction)
-for every action there is an equal and opposite reaction
Term
Lever
Definition
-a mechanical device used to produce a turning motion about a hinged point (axis)
Term
First Class Lever
Definition
-the fulcrum is placed between the weight and the force, producing greater strength and/or speed.
Term
Second Class Lever
Definition
-the weight is placed between the fulcrum and the force, producing greater strength
Term
Third Class Lever
Definition
-the force is placed between the fulcrum and the weight, producing greater speed
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