Quiz #5

Question 1

Gait Cycle: Average velocity (m/s)

Answer 1

1.37 m/s

Question 2

Gait Cycle: Average velocity (m/min)

Answer 2

80-82 m/min

Question 3

Gait Cycle: Average velocity Males (m/s)

Answer 3

1.43 m/s

Question 4

Gait Cycle: Average velocity Males (m/min)

Answer 4

84-86 m/min

Question 5

Gait Cycle: Average velocity Females (m/s)

Answer 5

1.28 m/s

Question 6

Gait Cycle: Average velocity Females (m/min)

Answer 6

76-77 m/min

Question 7

Gait Cycle: Minimum healthy velocity

Answer 7

1.2 m/s

Question 8

Gait Cycle: Stride Length average

Answer 8

1.41 m

Question 9

Gait Cycle: Stride Length Males

Answer 9

1.46 m

Question 10

Gait Cycle: Stride Length Females

Answer 10

1.28 m

Question 11

Gait Cycle: Cadence average

Answer 11

113 steps/min

Question 12

Gait Cycle: Cadence Males

Answer 12

111 steps/min

Question 13

Gait Cycle: Cadence Females

Answer 13

117 steps/min

Question 14

Velocity = _ x _

Answer 14

stride length x 0.5 cadence

Question 15

Stance phase

Answer 15

62%

Question 16

Swing phase

Answer 16

38%

Question 17

0-2% of gait cycle

Answer 17

Initial contact

Question 18

• Floor contact is made with the heel
• Joint positions determine the limbs loading response
• Opposite limb is at the end of terminal stance

Answer 18

Initial contact

Question 19

0-10% of gait cycle

Answer 19

loading response

Question 20

10-30% of gait cycle

Answer 20

Mid stance

Question 21

Objectives:
- progression over the stationary foot
- Limb and trunk stability

Answer 21

Mid stance

Question 22

30-50% of gait cycle

Answer 22

Terminal stance

Question 23

50-60% of gait cycle

Answer 23

Pre-swing

Question 24

60-73% of gait cycle

Answer 24

Initial swing

Question 25

73-87% of gait cycle

Answer 25

Mid-swing

Question 26

87-100% of gait cycle

Answer 26

Terminal swing

Question 27

Objectives:
- progression of body beyond the supporting foot

Answer 27

Terminal stance

Question 28

Objectives:
- To position the limb for swing

Answer 28

Pre-swing

Question 29

Objectives:
- Foot clearance of the floor
- Advancement of the limb from its trailing position

Answer 29

Initial swing

Question 30

Objectives:
- Limb advancement
- Foot clearance from the floor

Answer 30

Mid-swing

Question 31

Objectives:
- complete limb advancement
- Prepare the limb for stance

Answer 31

terminal swing

Question 32

@ velocity formula

Answer 32

Vavi = (Pi+1 - Pi-1) / (Ti+1 - Ti-1)

Question 33

Units for @ velocity method

Answer 33

m/s

Question 34

@ velocity method: i = 2
- i = 1; Time 0.5, Position 7.0
- i = 2; Time 1.0, Position 9.0
- i = 3; Time 1.5, Position 5.0

Answer 34

Vav2 = (P2+1 - P2-1) / (T2+1 - T2-1)
Vav2 = (P3 - P1) / (T3-T1)
Vav2 = (5 - 7) / (1.5 - 0.5)
Vav2 = -2 m/s

Question 35

Motion of bodies that have been projected into the air

Answer 35

Projectile Motion

Question 36

Understanding _ _ helps in learning to control or predict what happens to an object when in the air

Answer 36

projectile motion

Question 37

Relationship between displacement, velocity, and acceleration of a _

Answer 37

projectile

Question 38

Projectiles: vertical displacement

Answer 38

Line makes big arch and goes below dotted line

Question 39

Projectiles: vertical velocity

Answer 39

Line makes a straight diagonal line below dotted line

Question 40

Projectiles: vertical acceleration

Answer 40

Line is straight and parallel below dotted line

Question 41

Classes of projectiles

Answer 41

Inanimate and animate

Question 42

Basic definitions of projectile motion

Answer 42

• Trajectory (parabola)
• Instant of release
• Instant of contact

Question 43

Factors that influence the trajectory of a projectile

Answer 43

• Projection angle
• Projection speed
• Projection height

Question 44

Factors that influence the trajectory of a projectile: Projection angle
- 0 degrees indicates a directly _ _

Answer 44

horizonatal projection

Question 45

Factors that influence the trajectory of a projectile: Projection angle
- 90 degrees indicates a directly _ _

Answer 45

vertical projection

Question 46

Factors that influence the trajectory of a projectile: Projection angle
- Between 0 and 90 degrees trajectory will be _

Answer 46

parabolic

Question 47

Factors that influence the trajectory of a projectile: Projection speed
- Strongly influences the _ and _ of trajectory

Answer 47

height and length

Question 48

Factors that influence the trajectory of a projectile: Projection speed
- _ _ at release (takeoff) determines
- height achieved after release
- time it takes to reach maximum height
- time it takes to fall back to the releases position
- the velocity of the object when it returns to release position

Answer 48

Vertical speed

Question 49

Factors that influence the trajectory of a projectile: Projection speed
- _ _ at release (takeoff)
- in the absence of air resistance remains constant until the instant of contact
- along with time in the air determines horizontal distance (range)
- becomes smaller as the projection angle approaches 90 degrees
- becomes larger as the projection angle approaches 0 degrees

Answer 49

Horizontal speed

Question 50

Factors that influence the trajectory of a projectile: Projection height
- Difference in vertical height between the _ _ _ and the _ _ _

Answer 50

• instant of release
• instant of contact

Question 51

Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (soccer kick)

Answer 51

=

Question 52

Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (shot put)

Answer 52

>

Question 53

Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (free throw)

Answer 53

<