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Forces, A force=can make object move slower, A force=Make MO change…

- - - - make S.O. start moving
      - larger force=Make a SO move a greater distance
      - larger force=make moving object move faster
      - A force=change the shape of an object
      - A force=stop moving a MO
- - - - Friction is the force that is acting against an moving object
        
        Oppose motion
        
        Reduce speed of moving object
        
        Produce heat
        
        The rougher the surface is, the more heat is produced
    - - Control movement
      - Reduce slipping and sliding
    - - Apply lubricants
      - Streamline the shape of an object
      - Use rollers, ball bearings or wheels
    - - Cause wear and tear
      - Make thing overheat
  - - - Is used to extend or compress
        
        Mattress, to keep it firm
        
        Clothes pegs, to hang it firmly on the line
        
        Spring balance: To measure the weight of an object
    - - Stiffness=original -+ new length
      - Elastic Objects change shape when a force exerted on it and return to its original form when the force is removed
        
        Examples
        
        Spring
        
        Pulling a sprint causes it to stretch or grow longer
        
        Pushing a sprint causes it to compress or spring grows longer
        
        rubber band
  - - - The force Exerted by magnets on magnetic materials, such as, iron
        
        Table
    - - Force of repulsion
        
        Like poles facing each other(NN or SS)
      - Force of attraction
        
        Unlike poles facing each other(NS or SN)'
        
        Table
  - - - mass
        
        Mass is the amount of volume in an object
      - distance
    - - The force between earth and an object
    - - Amount of GF acting on an object
- - - - Helpful/Harmful
        
        Prevent people from falling
        
        wind drives windmills
        
        volcanoes erupt
        
        Can make things move slower