Friction

511 views

Published on

Published in: Education, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
511
On SlideShare
0
From Embeds
0
Number of Embeds
124
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Friction

  1. 1.  
  2. 2. Fric&on   •  Fric&on  is  a  force  between  2  surfaces  that  are   sliding,  or  trying  to  slide,  across  each  other.   •  Fric&on  always  slows  down  a  moving  object.   •  Air  resistance  is  a  type  of  fric&on.  
  3. 3. Fric&on   •  Fric&on  is  a  force  between  two  surfaces  that  are   sliding,  or  trying  to  slide,  across  each  other.  For   example,  when  you  try  to  push  a  book  along  the   floor  fric&on  makes  this  difficult.   •  Fric&on  always  works  in  the  direc&on  opposite   from  the  direc&on  the  object  is  moving,  or  trying   to  move.  Fric&on  always  slows  a  moving  object   down.   •     
  4. 4. Fric&on  
  5. 5. Fric&on   More  or  less  fric,on   •  The  amount  of  fric&on  depends  on  the  materials   from  which  the  two  surfaces  are  made.  The   rougher  the  surface,  the  more  fric&on  is   produced.   Heat   •  Fric&on  also  produces  heat.  If  you  rub  your  hands   together  quickly,  you  will  feel  them  get  warmer.  
  6. 6. Air  Resistance   •  Air  resistance   •  Air  resistance  is  a  type  of  fric&on  between  air   and  another  material.  When  an  aeroplane   flies  through  the  air,  for  example,  air  par&cles   hit  the  aeroplane,  making  it  more  difficult  for   it  to  move  through  the  air.  
  7. 7. Air  Resistance  
  8. 8. Streamlining   •  Some  shapes,  known  as  streamlined  shapes,   cause  less  air  resistance  than  others.   Aeroplanes  and  cars  are  streamlined,  so  that   they  move  through  the  air  as  easily  as   possible.  
  9. 9. Streamlining  
  10. 10. Fric&on  Experiment  

×