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6. When does the principle of moments apply to an object?

  • When the object is in equilibrium
  • When the object is not in equilibrium

7. What factors affect the stability of an object?

  • All of above
  • Base size
  • Position of centre of mass

8. What sort of orbit does a communications satellite have?

  • Geostationary
  • Moment orbit
  • Satellite orbit
  • Circular orbit
  • Mention orbit

9. What is centripetal acceleration?

  • Decelleration towards the centre of the circle
  • Acceleration towards the centre of the circle
  • Decelleration away from the centre of the circle
  • Acceleration away form the centre of the circle
  • Acceleration

10. In which direction does a centripetal force act?

  • Towards the Circle centre
  • Away from the circle centre
  • away from the person
  • Towards the person

11. What is the force of gravity?

  • A attractive force between masses
  • A detractive force between masses

12. What happens to the force of gravity as bodies move further apart?

  • Don
  • Nothing
  • It gets more
  • It gets less
  • It stays the same

13. What type of orbit do planets have around the sun?

  • Ellipses
  • Square
  • Circular
  • Triangular
  • Oval

14. When will an object topple?

  • when the centre of mass is lower
  • When the centre of mass moves ousidethe base
  • When the centre of mass stays inside the base

15. What is a communication satellite? A satellite used to send and receive....

  • Only telephone signals
  • Internet
  • Telephone and TV signals
  • Mobiles
  • Hairbands