HPEX 374 Study Guide Test 1 ACTUAL UPDATED QUESTIONS AND CORRECT
ANSWERS
Sagittal Plane - 90 degree with mediolateral axis
- flexion, extension
Frontal Plane - 90 degree with anteroposterior axis
- abduction, adduction, upper rotation, downward rotation, elevation, depression
, Transverse Plane - 90 degree with vertical axis
- retraction, protraction, horizontal abduction/adduction, internal rotation,
external rotation, supination, pronation
Scalar magnitude, arbitrary line is defining
- object traveling along a path
Vector magnitude with direction
torque fundamental concept largely responsible for human motion
- twisting/rotational force
- eccentric
shorter resistance arm allows for what (if force and force greater resistance to be moved
arm remain constant) - unit: Ncm
a longer force arm requires (if resistance and resistance less force to move the lever
arm remain constant) - unit: Ncm
COM Center of Mass
- point at which an objects mass is concentrated on the object or structure
COG Center of Gravity
- theoretical point in which gravity acts on a structure, depends on weight
distribution of body
T or F: when the gravity is uniform across the structure, True
the COM and COG are in the same location.
Linear Motion movement along line with all points moving in same direction at sasme speed
- translation only
Angular motion motion about a point
- rotation
general motion combination of linear and angular motion (translation and rotation)
statics constant velocity and sum of all forces = 0
Dynamics change in velocity and sum of all forces DOES NOT = 0
Law of Inertia - Newton's 1st Law
an object in a uniform state of motion tends to remain in that state of motion
unless acted on by an unbalanced force
Law of Acceleration - Newtons 2nd Law
acceleration of an object is proportional to the magnitude of the net force and is
in the same direction as the et force. acceleration of an object is inversely
proportional to the mass of the object, if mass goes up, acceleration goes down
and vice versa.
ANSWERS
Sagittal Plane - 90 degree with mediolateral axis
- flexion, extension
Frontal Plane - 90 degree with anteroposterior axis
- abduction, adduction, upper rotation, downward rotation, elevation, depression
, Transverse Plane - 90 degree with vertical axis
- retraction, protraction, horizontal abduction/adduction, internal rotation,
external rotation, supination, pronation
Scalar magnitude, arbitrary line is defining
- object traveling along a path
Vector magnitude with direction
torque fundamental concept largely responsible for human motion
- twisting/rotational force
- eccentric
shorter resistance arm allows for what (if force and force greater resistance to be moved
arm remain constant) - unit: Ncm
a longer force arm requires (if resistance and resistance less force to move the lever
arm remain constant) - unit: Ncm
COM Center of Mass
- point at which an objects mass is concentrated on the object or structure
COG Center of Gravity
- theoretical point in which gravity acts on a structure, depends on weight
distribution of body
T or F: when the gravity is uniform across the structure, True
the COM and COG are in the same location.
Linear Motion movement along line with all points moving in same direction at sasme speed
- translation only
Angular motion motion about a point
- rotation
general motion combination of linear and angular motion (translation and rotation)
statics constant velocity and sum of all forces = 0
Dynamics change in velocity and sum of all forces DOES NOT = 0
Law of Inertia - Newton's 1st Law
an object in a uniform state of motion tends to remain in that state of motion
unless acted on by an unbalanced force
Law of Acceleration - Newtons 2nd Law
acceleration of an object is proportional to the magnitude of the net force and is
in the same direction as the et force. acceleration of an object is inversely
proportional to the mass of the object, if mass goes up, acceleration goes down
and vice versa.
