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  • the size of the change in momentum of an object depends upon two things
  • the size of the force applied
  • the time the force is applied for
  • change in momentum= force x time

                   (kgm/s)          (N)      (S)

  • in a car accident the passanger can expierance large force which injures them. the sudden change in momentum causes theese large forces. such as...
  • air bags
  • seatbelts
  • crumbel zones
  • helemets

forces a moving objest

  • air resistance
  • gravity
  • upthrust
  • thrust
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