# Biomechanics

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• Biomechanics
• Newton's Laws
• Law of Inertia
• When an object continues at rest or uniform velocity until acted upon by an external force
• Taking penalty
• Law of Acceleration
• When a force acts on an object, the rate of change in momentum experienced by the object is proportional to the size of the force and takes place in the direction in which the force acts
• A ball taking a deflection
• Equal and Opposite Reaction Law
• For every action, there is an equal and opposite reaction
• Ball bouncing
• Motion
• Linear Motion
• When a body travels in a straight or curved line, with all parts of the body moving in the same direction, speed and distance
• Shot putt or skier
• Angular Motion
• When a body or part of a body moves in a circle or part of a circle around a point called the axis of rotation
• Cricket bowl or spinning basketball on finger
• General Motion
• Combination of linear and angular motion
• Wheelchair racer or javelin thrower
• Mass
• The amount of matter in an object
• Centre of mass
• The point at which the mass of a body could be concentrated without being effected by external forces
• Stability
• The ability to remain upright
• Affected by BOS, line of gravity and pos of centre of mass