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Chapter 8 Practice Paper: Forces and motion — question paper

QuizQuipPractice Series
QQ/GCSE-PHYS/CH8

GCSE (9–1) · GCSE Physics (Foundation and Higher)

Chapter 8 Practice Paper

Forces and motion

Duration: 40 minutes
Total: 30 marks
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READ THESE INSTRUCTIONS FIRST

  • Answer all questions.
  • Section A contains ten multiple-choice questions. Choose one answer, A, B, C or D, for each.
  • Section B contains structured questions. Write your answers in the spaces provided.
  • You may use a calculator. g = 9.8 N/kg unless a question says otherwise.
  • The number of marks is given in brackets [ ] at the end of each question or part question.
  • The total mark for this paper is 30.

Original practice material written for the MOE GCSE Physics syllabus. It is not an official MOE or school examination paper. Chapter 8: scalars and vectors, weight, resultant forces and free-body diagrams, motion graphs, a = Δv ÷ t, v² − u² = 2as (Higher), Newton’s laws, inertia and the acceleration practical.

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose one answer for each question. Each question is worth 1 mark.

  1. 1

    Which quantity is a scalar?

    1. Avelocity
    2. Bdistance
    3. Cforce
    4. Dacceleration
    ( )
  2. 2

    The weight of a 5.0 kg mass (g = 9.8 N/kg) is

    1. A49 N
    2. B5.0 N
    3. C0.51 N
    4. D51 N
    ( )
  3. 3

    Zero resultant force on a moving object means it

    1. Astops
    2. Bdecelerates
    3. Ckeeps a constant velocity
    4. Daccelerates uniformly
    ( )
  4. 4

    On a velocity–time graph, acceleration is found from

    1. Athe area under the graph
    2. Bthe gradient
    3. Cthe y-intercept
    4. Dthe curve length
    ( )
  5. 5

    A force of 30 N acts on a 6.0 kg mass. The acceleration is

    1. A0.2 m/s²
    2. B36 m/s²
    3. C180 m/s²
    4. D5.0 m/s²
    ( )
  6. 6

    A go-kart speeds up from 4.0 m/s to 14 m/s in 5.0 s. Its acceleration is

    1. A2.0 m/s²
    2. B0.31 m/s²
    3. C3.6 m/s²
    4. D20 m/s²
    ( )
  7. 7

    Newton’s third law pairs act

    1. Aon the same object
    2. Bon different objects
    3. Conly when moving
    4. Donly for magnetic forces
    ( )
  8. 8

    A 70 kg person’s weight (g = 9.8 N/kg) is closest to

    1. A70 N
    2. B7000 N
    3. C7.1 N
    4. D690 N
    ( )
  9. 9

    In the acceleration practical, a against 1/m should be plotted to show

    1. Aa ∝ m as a curve
    2. BF is independent of m
    3. Ca ∝ 1/m as a straight line
    4. Drandom error only
    ( )
  10. 10

    A skydiver’s terminal velocity occurs when

    1. Adrag = 0
    2. Bweight = 0
    3. Cweight = drag
    4. Dacceleration is maximum
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 11

    A sledge of mass 18 kg is pulled across flat snow with a horizontal pulling force of 55 N against 19 N of friction.

    1. (a)

      Calculate the resultant horizontal force.

      [1]
    2. (b)

      Calculate the sledge’s acceleration.

      [2]
    3. (c)

      Calculate the sledge’s weight in newtons (g = 9.8 N/kg).

      [1]
    4. (d)

      State whether the snow’s upward contact force is larger, smaller or equal to the weight, and why.

      [2]
  2. 12

    This question is about motion graphs. A motorbike’s velocity–time graph: 0 to 28 m/s in 8.0 s (uniform), constant 28 m/s for 15 s, then decelerating to rest in 70 m.

    1. (a)

      Work out the acceleration during the first 8.0 seconds.

      [2]
    2. (b)

      Calculate the distance covered at constant velocity.

      [1]
    3. (c)

      Calculate the deceleration during the final stage (use v² − u² = 2as, Higher).

      [3]
    4. (d)

      Calculate the total distance of the journey, and the total time taken.

      [2]
    5. (e)

      Describe the shape of the graph’s middle section.

      [1]
  3. 13

    This question is about Newton’s laws in action.

    1. (a)

      A book rests on a table. Explain why the normal contact force and the book’s weight are NOT a Newton’s-third-law pair.

      [2]
    2. (b)

      A shopper pushes a trolley with 40 N; friction is 15 N; the trolley and shopping have mass 25 kg. Calculate the acceleration.

      [3]

— End of paper —