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Biomechanics test 2

QuestionAnswer
What is kinematics ? The form, pattern or sequencing of movement with respect to time.
What is Liner displacement Change in location, or the directed distance from initial to final location.
What is speed? The rate you cover a distance
What is linear velocity ? The rate of change in location
T/F Distance covered and displacement may be equal for a given movement ? True
What is linear acceleration ? The rate of change in linear velocity
When acceleration is zero what is velocity ? Constant
What is instantaneous ? Occurring during a small interval of time M
What is average ? Occurring over a designed time interval
What are projectiles ? The body in free fall that is subject only to the forces of gravity and air resistance.
What is the apex? The highest point in the trajectory of a projectile
What is trajectory The flight path of a projectile.
What is the angle of projection? The direction at which a body is projected with respect to the horizontal.
What is projection speed? The magnitude of projection velocity
What is range? The horizontal displacement of a projectile at landing.
What is relative projection height ? The difference between projection height and landing height.
What is initial velocity ? Vector quantity incorporating both angle and speed of projection.
T/F the vertical speed of a projectile is constantly changing because of gravitational acceleration? True
T/F the horizontal acceleration of a projectile is always zero? True
What are the Laws of constant acceleration? Formulas relating displacement, velocity, acceleration, and time when acceleration is unchanging.
What is the relative angle ? Angle at a joint formed between the longitudinal axes of adjacent body segments.
What is Absolute angle ? Angular orientation of a body segment with respect to a fixed line if reference.
What are 3 units to measure angles in ? Degrees, radian, revolutions or rotations
What is the instant center? Percisely located center of rotation at a joint at a given instant in time.
What is angular distance ? The sum of all angular changes undergone by a rotating body/segment.
What is angulr displacement ? Change in the angular position or orientAtion of a line segment.
Which direction is regarded as positive ? Counterclockwise
Which direction is reguarded at negative? Clockwise
What is A radian? Unit of angular measure used in angular-liner kinematic quantity conversions; equal to 57.3 degrees
What is angular velocity? Rate of change in the angular position or orientation of a line segment.
What is Angular acceleration ? The rate if change in a angular velocity
What is the right hand rule? Procedure for identify g the direction of an angular motion vector.
What is the radius of rotation? The distance form the axis of rotation to a point od interest on a rotating body.
T/F the larger the radius of rotation the greater the linear distance traveled by a point on a rotating body. True
What is tangential acceleration? Component of acceleration of a body in angular motion directed along a tangent to the path of motion; represents change in linear speed.
What Is radial acceleration? Component of acceleration of a body in angular motion directed toward the center of curvature; represents change in direction.
Created by: theraevin
 

 



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