Seudónimo Seudónimo
  • 12-05-2017
  • Physics
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A contact force is a force that is exerted by an object when it touches another object. Which of the following is an example of a contact force?
a) An orange falling from a tree
b) A magnet repelling another magnet
c) A wood block sliding across the top of the desk
d) Hair standing up after someone takes off a wool cap.

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moebrahim64
moebrahim64 moebrahim64
  • 12-05-2017
ummmm....... i think it's b 
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