Kinematics

Question 1

Biomechanics is divided into these two categories:

Answer 1

kinematics (movement)
kinetics (forces)

Question 2

What two subcategories are in kinematics

Answer 2

linear and angular

Question 3

How do we characterize linear kinematics

Answer 3

displacement
velocity
acceleration

Question 4

How do we characterize angular kinematics

Answer 4

angular displacement
angular velocity
angular acceleration

Question 5

the branch of mechanics which describes the motion of objects

Answer 5

kinematics

Question 6

T or F? Kinematics considers the masses or forces that bring about the motion

Answer 6

false, gives no consideration

Question 7

Kinematics reports how position changes with time with respect to a ________ system

Answer 7

coordinate

Question 8

kinematics include _______ and ______ measures

Answer 8

temporal and spatial

Question 9

temporal = ________ aspect
spatial = measures _______

Answer 9

timing
distance

Question 10

all points moving over the same distance along the same parallel path is _________ kinematics

Answer 10

linear

Question 11

movement in a circular path around a point in space is _________ kinematics

Answer 11

angular

Question 12

T or F? in angular kinematics, objects close to the axis move a smaller distance

Answer 12

true

Question 13

T or F? general motion is created through a combination of linear and angular motion

Answer 13

true

Question 14

T or F? capture rate of recording equipment doesn’t matter when recording kinematics

Answer 14

false, it matters a lot. think helicopter video

Question 15

capture rate should be ________ as fast asa the fastest frequency of the movement

Answer 15

twice

Question 16

change in position is measured by

Answer 16

displacement (m)

Question 17

change in position divided by change in time is

Answer 17

velocity (m/s)

Question 18

change in velocity divided by change in time is

Answer 18

acceleration (m/s^2)

Question 19

slope of position vs time graph represents _________

Answer 19

velocity

Question 20

slope of velocity vs time graph represents _____-

Answer 20

acceleration

Question 21

vectors have a ___ and a ______

Answer 21

magnitude
direction

Question 22

length of a vector arrow represents _________ and orientation of an arrow represents _________

Answer 22

magnitude
direction

Question 23

vectors can be resolved into their ________

Answer 23

components

Question 24

angular displacement

Answer 24

theta
angular change in position
equal rotation, different linear displacement

Question 25

angular velocity

Answer 25

omega
angular displacement divided by change in time

Question 26

angular acceleration

Answer 26

alpha
change in angular velocity divided by change in time

Question 27

_______ angle = absolute
________ angle = relative

Answer 27

segment
joint