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Test The J-Curve and Physical Forces
Agenda
QUESTION 1: What approach trajectory is used in the modern Fosbury Flop?
A wide S-curve
A continuous straight line
A J-Curve
A progressive zigzag
2nd QUESTION: What is the main purpose of the initial straight phase of the approach?
Enter the turn with low speed
Generate pure horizontal speed and rhythm
Practice leaning inward
Reduce centrifugal force
3rd QUESTION: How many steps does the curved part leading to the bar usually have?
About two to three steps
Six to eight steps
Four to five steps
Single long stride
QUESTION 4: Why is the transition from straight to curved crucial?
Because it saves energy at the end of the attempt
Because it generates forces and rotation that are not achieved in a straight line
Because it makes it easier to brake before the mat
Because it avoids touching the bar with the knees
5th QUESTION: What causes the curve when running fast according to the physics described?
Instant stride length increase
A reduction in body mass
A centrifugal force pushing outwards
An elimination of the vertical component
QUESTION 6: How should the body lean in the turn be executed?
Bending at the waist to lower the center of mass
From the ankle, with the body as a rigid plank
Opening the shoulders and torso towards the bar
Only with head facing inward
QUESTION 7: What happens at take-off when the force accumulated in the curve is released?
Rotation is reduced and the athlete falls forward
Body stays without twisting and lifting
Horizontal velocity is nullified and the jump is stopped
Acts as a catapult to help throw vertically and facilitate back rotation
QUESTION 8: What technical error should be avoided with respect to the shoulders during the tilt?
To drop the inside shoulder instead of keeping them parallel to the ground
To turn the shoulders towards the bar
To relax the shoulders so that they drop naturally
To raise both shoulders at the same time
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