Force Production/Newtons laws
Motion
Balance and Stability
Projectile Motion
100
Newton's second law of motion can best be described through the formula
F = ma
100
What type of motion occurs when a gymnast performs a cartwheel?
Angular motion
100
Define balance
Refers to the ability of a body/object to maintain stability or equilibrium when stationary or moving.
100
What is the optimal angle of release for distance
45 degrees
200
Impulse is...
The change in momentum of an object caused by a force applied over a period of time.
200
Define acceleration
rate of change of velocity over time?
200
Raising your hands above your head does what?
Raises your centre of gravity and decreases stability
200
Give an sporting example in which an athlete may alter the angle of release to achieve a certain trajectory
Example: Basketball mid range shot vs a full court pass
300
For Mitchell Starc to maximise the force summation of a cricket speed bowl he should?
Generate momentum sequentially from larger body parts to smaller body parts as the previous part reaches peak speed
300
A somersault is an example of rotation about which axis
Medial-lateral axis or frontal axis
300
Where is this persons centre of gravity located
Just underneath there body
300
List 3 key factors influencing the trajectory of a javelin throw
1. Angle of release
2. Speed of release
3. Height of release
400
During take-off, why is it important for the long jumper to hit the take-off board with as much force as possible. Additionally which newton law does this example most accurately represent
Greater force into the ground results in a greater reaction force pushing the athlete upward and forward.
This most accurately represents Newton’s Third Law of Motion:
“For every action, there is an equal and opposite reaction.”
400
What form of motion does a tennis server use
Body displays linear motion
Arms display angular motion
400
What are 3 things a sumo wrestler can do to increase their balance/stability.
1. Widen base of support
2. Lower their centre of gravity
3. Keep Their Line of Gravity Within the Base of Support
400
What effect would high altitudes have on the trajectory of an projectile
Would travel further due to less air resistance