test #1 Flashcards
(26 cards)
True and False: Distance is not a vector quality
True
The study of motion without regard to the forces that cause it
Kinematics
Reason why long jumpers fold their body in half at landing
Increased flight time
Horizontal velocity of a projectile _____________
remains constant
Gravity only affects
vertical velocity
study of systems in constant motion, (including zero motion)
Statics
study of systems subject to acceleration
Dynamics
study of the appearance or description of motion
Kinematics
study of the actions of forces (Force can be thought of as a push or pull acting on a body.)
Kinetics
pertaining to quality (without the use of numbers)
Qualitative
involving numbers
Quantitative
motion along a line; also called translation
Linear motion
(along a straight line)
Rectilinear motion
(along a curved line)
Curvilinear motion
A long jumper, once frozen into gliding position, is being translated through the air in
curvilinear motion
motion: rotation around an axis
Angular
Most human motion is _____________ , a combination of linear and angular motion.
general motion
(Diagram showing vector representations of all forces acting on a defined system)
free body diagram
Another word for torque
moment of force
Attractive force that the earth exerts on a body
weight
Force per unit of area over which the force acts
pressure
Weight per unit of volume
specific weight
application of a single force of sufficient magnitude to cause injury to a biological tissue
Acute
repeated application of a subacute load that is usually of relatively low magnitude
Repetitive
