# Shared Flashcard Set

## Details

Biomechanics
Definitions
19
Physics
01/30/2010

Term
 Kinematics
Definition
 The study of the description of motion, including considerations of space and time.What the motion looks like, includes how far the motion travels (space), and how fast the motion travels (time).
Term
 Kinetics
Definition
 The study of action of forces (create movement). Why motions happen.
Term
 Statics
Definition
 Branch of mechanics dealing with systems in a constant state of motion. Either no motion (rest) or motion of constant velocity (no change in direction or speed).
Term
 Dynamics
Definition
 Branch of mechanics dealing with systems subject to acceleration. Change in motion (speed up/slow down) or direction (turning).
Term
 Qualitative
Definition
 General. No numbers. EX: "Lower."
Term
 Quantative
Definition
 Specific. Use numbers. EX: "90 cm lower."
Term
 Scalar
Definition
 Exclusively with amount (magnitude). EX: Time, temperature.
Term
 Vector
Definition
 Describe with amount (magnitude) and direction (velocity). EX: Weight, force.
Term
 Inertia
Definition
 Tendancy of a body to resist a change in its state of motion (does not want to change its motion, whatever the motion may be). The more mass, the more inertia.
Term
 Mass
Definition
 Scalar. Quantity of matter contained in an object.
Term
 Force
Definition
 Vector. Push or pull. The product of mass and acceleration.
Term
 Centre of Gravity
Definition
 Point around which a body's weight is equally balanced, no matter how the body is positioned.
Term
 Weight
Definition
 Vector. Attractive force that the earth exerts a body.
Term
 Torque
Definition
 Vector. Rotary effect of a force.
Term
 Impulse
Definition
 Vector. Product of a force and the time over which the force acts.
Term
 Distance
Definition
 Scalar. Measured along the path of motion.
Term
 Linear Displacement
Definition
 Vector. Measured in a straight line from position 1 (initial) to position 2 (final).
Term
 Speed
Definition
 Scalar. The distance covered divided by the time taken to cover it.
Term
 Velocity
Definition
 Vector. The rate of change in a position that occurs during a given period of time.
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