Quiz #5 Flashcards
1
Q
Gait Cycle: Average velocity (m/s)
A
1.37 m/s
2
Q
Gait Cycle: Average velocity (m/min)
A
80-82 m/min
3
Q
Gait Cycle: Average velocity Males (m/s)
A
1.43 m/s
4
Q
Gait Cycle: Average velocity Males (m/min)
A
84-86 m/min
5
Q
Gait Cycle: Average velocity Females (m/s)
A
1.28 m/s
6
Q
Gait Cycle: Average velocity Females (m/min)
A
76-77 m/min
7
Q
Gait Cycle: Minimum healthy velocity
A
1.2 m/s
8
Q
Gait Cycle: Stride Length average
A
1.41 m
9
Q
Gait Cycle: Stride Length Males
A
1.46 m
10
Q
Gait Cycle: Stride Length Females
A
1.28 m
11
Q
Gait Cycle: Cadence average
A
113 steps/min
12
Q
Gait Cycle: Cadence Males
A
111 steps/min
13
Q
Gait Cycle: Cadence Females
A
117 steps/min
14
Q
Velocity = _ x _
A
stride length x 0.5 cadence
15
Q
Stance phase
A
62%
16
Q
Swing phase
A
38%
17
Q
0-2% of gait cycle
A
Initial contact
18
Q
- Floor contact is made with the heel
- Joint positions determine the limbs loading response
- Opposite limb is at the end of terminal stance
A
Initial contact
19
Q
0-10% of gait cycle
A
loading response
20
Q
10-30% of gait cycle
A
Mid stance
21
Q
Objectives:
- progression over the stationary foot
- Limb and trunk stability
A
Mid stance
22
Q
30-50% of gait cycle
A
Terminal stance
23
Q
50-60% of gait cycle
A
Pre-swing
24
Q
60-73% of gait cycle
A
Initial swing
25
73-87% of gait cycle
Mid-swing
26
87-100% of gait cycle
Terminal swing
27
Objectives:
- progression of body beyond the supporting foot
Terminal stance
28
Objectives:
- To position the limb for swing
Pre-swing
29
Objectives:
- Foot clearance of the floor
- Advancement of the limb from its trailing position
Initial swing
30
Objectives:
- Limb advancement
- Foot clearance from the floor
Mid-swing
31
Objectives:
- complete limb advancement
- Prepare the limb for stance
terminal swing
32
@ velocity formula
Vavi = (Pi+1 - Pi-1) / (Ti+1 - Ti-1)
33
Units for @ velocity method
m/s
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
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
35
Motion of bodies that have been projected into the air
Projectile Motion
36
Understanding _ _ helps in learning to control or predict what happens to an object when in the air
projectile motion
37
Relationship between displacement, velocity, and acceleration of a _
projectile
38
Projectiles: vertical displacement
Line makes big arch and goes below dotted line
39
Projectiles: vertical velocity
Line makes a straight diagonal line below dotted line
40
Projectiles: vertical acceleration
Line is straight and parallel below dotted line
41
Classes of projectiles
Inanimate and animate
42
Basic definitions of projectile motion
- Trajectory (parabola)
- Instant of release
- Instant of contact
43
Factors that influence the trajectory of a projectile
- Projection angle
- Projection speed
- Projection height
44
Factors that influence the trajectory of a projectile: Projection angle
- 0 degrees indicates a directly _ _
horizonatal projection
45
Factors that influence the trajectory of a projectile: Projection angle
- 90 degrees indicates a directly _ _
vertical projection
46
Factors that influence the trajectory of a projectile: Projection angle
- Between 0 and 90 degrees trajectory will be _
parabolic
47
Factors that influence the trajectory of a projectile: Projection speed
- Strongly influences the _ and _ of trajectory
height and length
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
Vertical speed
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
Horizontal speed
50
Factors that influence the trajectory of a projectile: Projection height
- Difference in vertical height between the _ _ _ and the _ _ _
- instant of release
- instant of contact
51
Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (soccer kick)
=
52
Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (shot put)
>
53
Factors that influence the trajectory of a projectile: Projection height
- Height at instant release _ height at instant of contact (free throw)
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