Biomechanics SCSA

linear motion

when all parts of an object move in the same direction (rectilinear and curvilinear)

angular motion

the rotation of an object around a fixed point (e.g. the arm of a pedal on a bike)

general motion

a combination of linear and angular motion

projectile motion

the motion of a projectile after being launched/released and the curved path it travels in under the action of gravity

speed

refers to the distance an object travels over a certain time period

velocity

the speed of an object in a specific direction

acceleration

the process of increasing speed

trajectory

the path of a projectile as it travels through the air and is acted on by gravity and other forces

balance

the ability to maintain stability and keep the centre of gravity within the base of support to maintain an objects position

centre of gravity

the point around which a body’s weight is evenly distributed

static balance

the ability to maintain stability in a fixed position

dynamic balance

the ability to maintain stability while the body is in motion

newtons first law

an object will remain at rest or in motion unless acted on by an external force

newtons second law

the acceleration of an object is proportional to the force and inversely proportional to its mass. (F=MA)

newtons third law

for every action there is an equal and opposite reaction