TEST #2

Question 1

During knee extension, quadriceps muscle pulls on the tibial tuberosity via patellar tendon. the force of the patellar tendon would. 123

Answer 1

1. produce anterior translation of the tibia
2. produce compression at the knee joint
3. produce knee extension

Question 2

A ballet dancer spins about her longitudinal axis twice (2 revolutions) while she is in the air. The angular displacement of the dancer is __ degrees.

Answer 2

0 degrees

Question 3

Two cars are racing around a track. Final turn, same linear velocity. Car A is right up against the inside of the track, Car B is on the outside. which car has a greater risk of skidding out of the track

Answer 3

Car A

Question 4

The rate of change in angular displacement is called _____________.

Answer 4

angular velocity

Question 5

True or False: shoulder horizontal adduction takes place in the frontal plane.

Answer 5

False

Question 6

Tangential acceleration of a rotating object increases with increase in

Answer 6

angular acceleration

Question 7

Tangential acceleration of a rotating object represents a rate of change in

Answer 7

linear velocity

Question 8

A baseball player is at bat. At the ball contact, the bat was rotating at 300 degrees per second. This (300 degrees per second) is an example of

Answer 8

Instantaneous angular velocity

Question 9

A rigid object (ex. Tennis raquet) is rotating about an axis. Compared to the point that is closer to the rotating axis, the point that is further away from the axis would have greater:123

Answer 9

1. Linear Displacement
2. Radial Acceleration
3. Linear Velocity

Question 10

1. accelerating an object
2. changing an objects shape
3. changing direction of an object
4. Decelerating an object

Answer 10

Components of force

Question 11

1. Allow players to make sharper cuts
2. increase risk of acl injury
3. save money on field maintenence

Answer 11

Artificial turf

Question 12

A sprinter is pushing down and back on the starting block. the reaction of the force would push him

Answer 12

up and forward

Question 13

An advantage of having a long arm as a baseball pitcher

Answer 13

can produce greater linear velocity of the ball

Question 14

The rate of change in angular velocity over time is called:

Answer 14

angular acceleration

Question 15

An example of indirect force

Answer 15

gravity

Question 16

As the ground reaction force becomes more horizontal, what would increase?

Answer 16

Normal force

Question 17

Pronation/Supination is a movement occuring about the __________ axis.

Answer 17

Longitudinal

Question 18

Shoulder motion during the up-phase of wide-grip bench press

Answer 18

Horizontal adduction

Question 19

The arrow going from the heel to the middle of the ankle represents ___________

Answer 19

normal force

Question 20

When friction force exceeds static friction __________ occurs

Answer 20

slipping

Question 21

gravity only affects __________ velocity

Answer 21

vertical

Question 22

The horizontal velocity of a projectile (assuming no air resistance)

Answer 22

remains constant

Question 23

The ________ is an example of a flat bone that protects organs and provides surfaces for muscle attachments.

Answer 23

scapula

Question 24

________________ is a modified ball and socket joint between the proximal clavicle and the manubrium of the sternum

Answer 24

Sternoclavicular joint

Question 25

________________ is a irregular joint between the acromion process of the scapula and the distal clavicle

Answer 25

Acromioclavicular joint

Question 26

__________________ is a syndesmosis with the coracoid process of the scapula bound to the inferior clavicle by the coracoclavicular ligament

Answer 26

Coraoclavicular joint

Question 27

_________________ is a ball and socket joint in which the head of the humerus articulates with the glenoid fossa of the scapula

Answer 27

Glenohumeral joint

Question 28

_________________ is a regular pattern of scapular rotation that accompanies and facilitates humeral abduction

Answer 28

Scapulohumeral rhythm

Question 29

The major flexor muscles at the glenohumeral joint are the____________________ and _______________

Answer 29

clavicular pectoralis major; anterior deltoid

Question 30

Where is the humeroulnar joint?

Answer 30

the elbow joint

Question 31

The _______ muscles at the elbow are the brachialis, biceps brachii, and brachioradialis.

Answer 31

flexor

Question 32

The ________ muscle at the elbow is the triceps brachii, assisted by anconeus.

Answer 32

extensor

Question 33

The pronator muscle of the forearm is the _______________

Answer 33

pronator quadratus

Question 34

What is the function of the retinacula at the wrist?

Answer 34

These fibrous bands of fascia form protective passageways through which tendons, nerves, and blood vessels pass.

Question 35

The ________ muscles at the wrist are the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus,

Answer 35

flexor

Question 36

The _________ muscles at the wrist are extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi ulnaris

Answer 36

extensor

Question 37

The carpometacarpal joint of the thumb is a _______ joint

Answer 37

saddle

Question 38

The other carpometacarpal joints are ________ joints.

Answer 38

gliding

Question 39

Movement _________ is also referred to as form or technique.

Answer 39

kinematics

Question 40

________________ is the directed distance from initial to final location

Answer 40

linear displacement

Question 41

What is linear speed?

Answer 41

Distance covered over the time taken

Question 42

What is linear velocity?

Answer 42

The rate of change in location

Question 43

What is acceleration?

Answer 43

The rate of change in linear velocity

Question 44

The __________ component of a projectile is influenced by gravity

Answer 44

vertical

Question 45

The force of gravity produces a constant acceleration of ______m/s2 on bodies near the surface of the earth.

Answer 45

-9.81

Question 46

The pattern of change in the vertical velocity of a projectile is

Answer 46

symmetrical about the apex.

Question 47

Vertical velocity __________ as the ball rises and __________ as the ball falls due to the influence of gravitational force.

Answer 47

decreases; increases

Question 48

___________ the magnitude of projection velocity

Answer 48

Projection speed

Question 49

The ______________ velocity of the shot at the moment of release primarily determines the ultimate horizontal displacement of the shot.

Answer 49

instantaneous

Question 50

__________________ - the difference between projection height and landing height

Answer 50

Relative projection height

Question 51

A _____________ is used to measure the angle between body segments.

Answer 51

goniometer

Question 52

__________________ is the directed angular distance from initial to final angular position

Answer 52

angular displacement

Question 53

When the forearm returns to original position at the completion of a curl exercise, the ________________ at the elbow is zero.

Answer 53

angular displacement

Question 54

__________ is the size of the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.

Answer 54

radian

Question 55

The direction of rotational motion is identified as positive (_____________) or negative (_____________).

Answer 55

counterclockwise; clockwise

Question 56

The greater the __________ velocity of a baseball bat, the farther a struck ball will travel, other conditions being equal

Answer 56

angular

Question 57

_____________ is the rate of change in angular velocity

Answer 57

angular acceleration