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6. How do you work out a moment?

  • Moment= Resultant force x mass
  • Moment= Force divided by Perpendicular distance from the face to the pNot.
  • Moment= Force x Perpendicular distance from the face to the pNot
  • Moment= Mass x Weight

7. What force can rub things away?

  • Contact forces
  • Air Resistance
  • Friciton
  • Static

8. Structures are usually stronger if they are built out of what?

  • Rectangels
  • Stright Lines
  • Triangels
  • Squares

9. Nothing starts moving without a _____ being involved.

  • Force
  • Friction
  • Push
  • Weight

10. What do we weigh forces in?

  • Grams (G)
  • Newtons (N)
  • Inches
  • Centemeters (Cm)

11. What are the THREE thing that forces can change?

  • Heat, Speed & Lenght
  • Magnetism, Static & Up Thrust
  • Speed, Shape & Size
  • Weight & Lenght

12. what happens when a car is speeding up?

  • The forces are more-or-less equal.
  • The air resistance is larger than the engine force.
  • The Engine force is larger than the air resistance.
  • The forces are equal.

13. What is a form of electricity that can attract things?

  • contact forces
  • Weight
  • Static
  • Magnetism

14. Name THREE non-contact forces

  • Weight, Up Thrust & Magnetism
  • Gravity, Static & Magnetism
  • Push, Pull & Friction
  • Air Resistance & Up Thrust

15. What type of force needs something to touch it to be affect?

  • Magnetism
  • Static
  • Contact Forces
  • Friction

16. What do we use to measure forces?

  • Newtonmeter
  • A Clamp stand and a Ruler
  • A Ruler
  • A Weighing scales

17. A _____ is needed to start an object moving.

  • Force
  • Weight
  • Push
  • Pull

18. What happens if a car is moving at a steady speed?

  • The forces are almost balanced, the engine power has a slightly force.
  • The cars air resistance is huge!
  • The forces are balanced. It does not move.
  • The car's engine force is huge!

19. What is an "equal force" known as (when the forces are both the same)?

  • non-movement
  • Equal forces
  • Reaction
  • Balanced

20. what happens if the Up Thrust on a ball is higher than the Weight?

  • The ball flies up.
  • The ball rolls away.
  • The ball stays where it is.
  • The ball sinks.