Lesson 4.5.1.4

4.5.1.4 Resultant forces Quiz: AQA Physics, Unit 5

20 questions

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Lesson 4.5.1.4, Resultant forces: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 5: Forces, written with Revision Ninja.

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The 20 questions

  1. What is a resultant force?

    • Single equivalent force
    • Maximum net force
    • Total balanced force
    • Frictional force sum
  2. Two forces of 6 N and 4 N act on an object in the same direction. What is the resultant force?

    • 0 N
    • 2 N
    • 24 N
    • 10 N
  3. Two forces act in opposite directions: 6 N to the right and 4 N to the left. What is the resultant force?

    • 2 N to the right
    • 0 N
    • 10 N to the left
    • 10 N to the right
  4. What does a resultant force of zero indicate about the forces?

    • Stationary
    • Maximum
    • Unbalanced
    • Balanced
  5. Forces of 15 N and 25 N both act to the left on an object. What is the resultant force?

    • 40 N to the right
    • 10 N to the right
    • 10 N to the left
    • 40 N to the left
  6. Three forces act in a line: 8 N to the right, 3 N to the left and 2 N to the left. What is the resultant?

    • 5 N to the right
    • 13 N to the right
    • 3 N to the right
    • 3 N to the left
  7. What is the key property of a resultant force?

    • Same overall effect
    • Always acts upwards
    • Cancels all motion
    • Always equals zero
  8. What happens when a non-zero resultant force acts on an object?

    • It accelerates
    • Mass decreases
    • It stops moving
    • Velocity stays constant
  9. What defines an isolated system in physics?

    • Constant velocity only
    • No external forces
    • Zero internal mass
    • No energy stores
  10. What do arrows represent on a free body diagram?

    • Velocities
    • Forces
    • Accelerations
    • Energy stores
  11. What is the resultant force when forces acting on an object are balanced?

    • Maximum
    • Equal to mass
    • Negative
    • Zero
  12. When a single force is resolved into two perpendicular components, what is their combined effect?

    • Double the single force
    • Zero net effect
    • Same as single force
    • Half the single force
  13. What can scale vector diagrams be used to determine?

    • Chemical potential
    • Thermal energy
    • Resultant force
    • Object temperature
  14. (HT only) On a scale drawing, two forces at right angles are 3 cm and 4 cm long, with 1 cm representing 1 N. What is the resultant force?

    • 1 N
    • 5 N
    • 7 N
    • 12 N
  15. Forces of 20 N upward and 20 N downward act on a box. What is the resultant force?

    • 40 N upward
    • 40 N downward
    • 20 N upward
    • 0 N
  16. A 30 N push is opposed by 12 N of friction. What is the resultant force?

    • 30 N
    • 12 N
    • 42 N
    • 18 N
  17. How do you find the resultant of two forces acting in a straight line?

    • Combine opposing directions
    • Always add them
    • Divide them together
    • Multiply both forces
  18. An object has forces of 50 N to the right, 20 N to the left, 10 N to the left and 5 N to the right. What is the resultant force?

    • 25 N to the right
    • 25 N to the left
    • 0 N
    • 85 N to the right
  19. A plane flies at constant velocity with a forward thrust of 80 kN and a backward drag of 80 kN. What is the resultant force?

    • 0 N
    • 160 kN backward
    • 80 kN forward
    • 160 kN forward
  20. A tug-of-war team pulls 500 N to the left and the other team pulls 480 N to the right. What is the resultant force?

    • 20 N to the left
    • 0 N
    • 980 N to the left
    • 20 N to the right

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