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Biomechanics Year 13 - Coggle Diagram
Biomechanics Year 13
Mechanics of movement
Linear motion: occurs when the body moves ina straight or curved line, with all the body parts moving at the same direction, speed and distance. This happens when direct force is applied. eg shot put
Angular motion: occurs when all or part of the body moves in a circle or part of a circle. This happens when a force is applied to an object outside of its centre of mass. eg top spin in tennis
General motion: combination of linear and angular motion. This happens in most sporting scenarios eg running
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Mass vs Weight
Mass is the quantity of a matter a body possesses. Mass stays the same in any place. It is a scalar quantity as there is no direction.
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Distance vs displacement
Distance: the amount of ground an object covers during its motion (the path it takes from start to finish) - scalar
Displacement: the shortest route in a straight line from A to B,as the crow flies
Speed vs velocity
speed it the rate of change in a distance or body's movement per unit of time, with no direction.
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Distance time graphs 
Velocity time graphs
Acceleration and deceleration: the rate of change of velocity, direction aware, vector quantity, acceleration+ deceleration -
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Zero vertical force - the sum of 2xGRF is equal to the length of the weight vector which means there is zero net vertical force. Therefore the body is stationary
Upward movement: the sum of 2xgrf is greater than the length of the weight vector which means there is upward movement.
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Force time graphs - shows impulse and allows us to work out if a performer is accelerating or decelerating