Biomechanics - 7 - Angular Kinematics

T

T/F: force is a function of mass

T

T/F: force is a function of acceleration

angular velocity

_________ is the rate of change of angular position over time

linear velocity is a function of both radius and angular velocity — and both are proportional to linear velocity 

what does the equation V = r * w mean ?

angular acceleration

___________ is the rate of change of angular velocity over time

linear, angular

in many human movements, the results are _____ even though the motions of the segments are _______

SAME angular velocity

in this diagram, does S1 or S2 have a higher angular velocity?

S2

in this diagram, does S1 or S2 have a higher linear velocity?

• if velocity increases

• if radius decreases

radial (centripetal) acceleration increases when velocity and radius do what: (2)

position

in this diagram, what is the vertical axis of the top graph?

time

in this diagram, what is the horizontal axis of both graphs?

velocity 

in this diagram, what is the vertical axis of the bottom graph?

velocity

in this diagram, what does the slope of the top graph indicate?

acceleration

in this diagram, what does the slope of the bottom graph indicate?

differentiation

the process indicated in the diagram of getting the bottom graph from the data of the top graph is called _________

they indicate changes in direction where velocity is zero

what do the vertical dotted lines on this diagram indicate?

“forwards” / towards the finish line / positive velocity

in the top graph, positive slopes indicate moving __________

“backwards” / away from finish line / negative velocity

in the top graph, negative slopes indicate moving __________

positive

in the bottom graph, when the line is above the horizontal axis the velocity is _________

negative 

in the bottom graph, when the line is below the horizontal axis the velocity is _________

comparison

angle angle diagrams are good plots for _________ between sides or pathologies

F; NO TIME/TEMPORAL DATA

T/F: angle angle diagram data includes information about the timing of movements

there is nothing in this deck about computing relative angles (go look at the slides)

there is nothing in this deck about computing relative angles