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LCPE Laws of motion

Biomechanics part 1

TermDefinition
Newtons first law An object in motion will stay in motion at a constant velocity unless an external force acts upon it and an object at rest will stay at rest until an external force acts upon it.
Example of newtons first law Golf ball on tee is at rest until a golf club (the external force) strikes it
Newtons second law Newtons second law states that the force applied to an object depends on its mass and its acceleration. F=ma
Example of newtons second law If a hurler was to take a 65 and shoot, with a wind going across the field, the force from the wind would cause it to accelerate in the direction of the wind.
Newtons third law For every force applied there will be an equal and opposite reaction to that force.
Example of newtons third law A sprinter accelerating off of the blocks. When a sprinter has a good explosive start, the force that they exert allows them to be quick off the blocks as that force is applied directly back towards them
What is a plane and name the three planes. A plane is an imaginary flat surface running through the body where movement occurs, it consists of : The Sagital Plane, The Transverse Plane and The Front Plane
What is an axis and name the three axis An axis is an imaginary line that runs through the body in which the body rotates around.
Sagittal Plane and what axis is paired Splits the body down the centre into left and right consists of movements like running, walking and kicking. Paired with the transverse axis (through hips) (SP,TA)
The frontal Plane and axis paired with it The frontal plane splits the body vertically into front and back, allowing for lateral movements like, side skipping, cartwheels, jumping jacks. Paired with the sagital axis (front to back) (FP,SA)
Transverse Plane and axis paired with it Horizontally splits the body into upper and lower halves, allowing for twisting/rotating. It is paired with the vertical axis. Movements like a golf swing and a 360 spin.
Created by: charlierushe
 

 



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