L16 - Intro to Kinetics

• Only forces that are external to a system can generate motion
• We use the concept of action & reaction to generate forces in a desired direction
• In sport we maximise acceleration through relative strength

  • Use concept of resistance to movement, inertia, action & reaction in order to maximise relative strength
• Forces are assumed to act through the centre of mass of a system
• To visualise the forces acting we use “Free Body Diagrams”

  • Reduces info down & simplifies it