topic 3 biomechanics

movement of a body in a straight or curved line where all the parts move in the same direction and distance over the same time

a direct force being applied to the centre of mass of the body

distance, displacement, speed, velocity, acceleration/deceleration

total length covered from start to finish in meters

the shortest straight line route from start to finish measured in meters

the rate of change in distance measured in meters per second

the rate of change in displacement measured in m/s

rate of change in velocity measured in M/S/S

occurs when the rate of change in velocity is negative

movement of a body part or body in a circular path about an axis of rotation

a force applied outside the centre of mass resulting in angular motion

a measure of the turning (rotational or eccentric) force applied to a body

an imaginary line that passes through the centre of mass about which a body rotates around longitudinal, transverse and frontal axis

side to side

top to bottom

front to back

cartwheel

twist/turn

somersault

radians

results from an eccentric force being applied outside the body’s centre of mass

torque

angular velocity, moment of inertia, angular momentum

skeleton bob at top speed

arm rotating about a shoulder joint of a tennis player serving

the rate of change in angular displacement measured in rad/s

angular displacement/ time taken

the resistance of a body to change its state of angular motion or rotation measured in kgm2

mass and distribution of mass across the axis