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Forces in Balance

Quiz by Gary

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15 questions
Show answers
  • Q1
    What is the name of the force that acts at right-angles to an object in contact with a surface ?
    Normal Force
    Acceleratory force
    Weight
    Balanced force
    45s
  • Q2
    What is the name of the forward force generated by an engine or propellor?
    Lift
    Normal
    Thrust
    Drag
    45s
  • Q3
    What is another name for the force caused by air resistance?
    Normal
    Thrust
    Lift
    Drag
    45s
  • Q4
    What is the name of the upward force generated by an aircraft’s wing or a helicopter’s rotor?
    Lift
    Friction
    Drag
    Thrust
    45s
  • Q5
    What force occurs when two moving surfaces come into contact?
    Drag
    Weight
    Friction
    Thrust
    45s
  • Q6
    What is the name of the force generated by the brakes on a vehicle?
    Drag
    Weight
    Friction
    Normal
    45s
  • Q7
    When two forces are equal and opposite in direction on an object what will be the resultant force?
    Equilibrium
    Acceleration
    Zero Newtons
    Constant velocity
    45s
  • Q8
    If a resultant force on an object is greater than zero what will happen to the motion of that object?
    It will stay at a Constant velocity
    It will accelerate
    It will have Zero velocity
    45s
  • Q9
    The best definition of a resultant force is?
    A force which allows equilibrium to be obtained.
    The result of adding all forces together.
    The result of resolving forces in both directions.
    A single force which replaces all the other forces after working out their interactions.
    45s
  • Q10
    If a car accelerates what will happen to the size of the drag force?
    Increases
    No change
    Decreases
    45s
  • Q11
    If a plane is flying level and has a thrust force of 120KN and the drag force is 90KN what is the resultant force?
    30KN forward
    150KN backwards
    30 KN backwards
    120KN forwards
    45s
  • Q12
    If a plane is accelerating downwards what can you say about the vertical forces?
    Weight > Lift
    Weight > Thrust
    Lift > Weight
    Thrust > Weight
    45s
  • Q13
    If a motorbike is travelling at a constant 50 mph what can we say about the horizontal forces?
    The drag force is zero
    The thrust force is zero.
    The resultant horizontal force is zero
    The resultant horizontal force is greater than zero
    45s
  • Q14
    If a car is accelerating what can we about the horizontal forces?
    Drag < Thrust
    Thrust = Drag
    Thrust = Friction
    Thrust < Drag
    45s
  • Q15
    What forces act on a moving car?
    Weight, drag and thrust.
    Weight, normal, drag and thrust.
    Weight, normal, friction, drag and thrust.
    Thrust and drag
    45s

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