newtons first law - an object will stay at rest or at a constant velocity if a force hasn't been applied to the object., newtons second law equation - force= mass x acceleration, newtons 3rd law - every action has an equal and opposite reaction, scalar quantity - when measurements are described in terms of just their size or magnitude, speed= - distance/time, example of 1st class lever - throw in, in football, example of 2nd class lever - movement at the ankle during long jump to explode of the mark, example of 3rd class lever - bicep curl, mechanical advantage of 1st and 3rd class lever - allows large range of movement and can be moved quickly, mechanical advantage of 2nd class lever - allows you to lift a heavy load and generate larger forces, force arm - the length between where the fulcrum and effort, resistance arm - the length between the fulcrum and the resistance, centre of mass - the point of concentration of mass/ the point of balance, inertia - the resistance an object has to a change in its state of motion, ground reaction force - the force exerted on the ground by the body in contact with it, linear motion - motion in a straight or curved line, with all body parts moving the same distance at the same speed in the same direction ,

Biomechanics

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