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Test Take-off Mechanics
Agenda
1st QUESTION: What is the optimal takeoff angle range in the jump, according to the text?
Exact forty-five degrees
Between eighteen and twenty-two degrees
Thirty to thirty-five degrees
Fifty to fifty-five degrees
2nd QUESTION: What are you looking to convert at take-off to define the trajectory of the jump?
Horizontal speed into vertical speed
Arm strength into leg strength
The height of the center of mass at stride length
Torso rotation in lateral balance
QUESTION 3: What happens if the athlete attempts to jump too high?
Increase flight distance
Improves the stiffness of the swing leg
Reduces the need for triple extension
It slows down the forward stride
QUESTION 4: How should the kicking leg behave when impacting the board?
Like a soft shock absorber that absorbs the blow
Like a stiff spring with minimal knee flexion
Like a lever collapsing to lengthen contact
Like a slow spring with high sink
QUESTION 5: What foot and leg action helps create instant stiffness when attacking the board?
An active downward and backward stride
A smooth and sustained forward thrust
A flat, static stance without movement
A lateral toe drag
QUESTION 6: What is the function of the free segments during take-off?
Decrease the height of the center of mass
Avoid extension of the supporting leg
Generate vertical momentum and relieve the swinging leg
Block the movement of the hips and trunk
7TH QUESTION: What is the recommended torso posture at the end of the take-off?
Leaning sharply forward to gain momentum
Upright and neutral position
Pronounced arching backwards
Rotation of the trunk to stabilize the flight
8th QUESTION: What is a consequence of excessive knee flexion in the swing?
Increased use of elastic energy and rebound
Faster contact with the board
Better alignment and triple extension
Energy dissipation and sinking
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