Forces and Friction

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  • Created by: Olivia
  • Created on: 18-03-14 11:14

A force is simply a push or a pull. There are lots of different forces you need to know about:

  • Gravity or weight always acting straight downwards
  • Reaction force from a surface, usually acting straight upwards
  • Electrostatic force between two charged objects. The direction depends on the type of charge (like charges repel, opposite charges attract)
  • Thrust or push or pull due to an engine or rocket speeding something up
  • Drag or air resistance or friction which is slowing the thing down.
  • Lift due to an aeroplane wing.
  • Tension in a rope or cable.

Friction is alwsys there to slow things down

  • If an object has no force…

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