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Force, Definition - Coggle Diagram

- - - - Separate magnetic and non-magnetic materials
      - Separate metal pieces at the junkyard (for recycling)
      - Refrigerator door
      - Maglev train (bullet train)
- - - - Definition
        
        Friction is the force that opposes the motion between two surfaces in contact
      - Uses
        
        Helps in walking and standing stably
        
        Helps writting on paper
        
        Helps to light up a match
        
        Reduces the speed of parachutist
      - Friction is nuisance when
        
        Makes movement difficulties
      - Ways to reduce frictions
        
        Smooth surfaces
        
        Ball bearings
        
        Lubricants
        
        Streamlined shape
    - - Definition
      - Examples