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Energy concepts: WJEC A‑Level Physics questions

Every WJEC A-Level Physics exam question on 1.4 Energy concepts, 2016–2025, with its mark scheme and examiner’s report.

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1,173 questions

  1. Q2(c)

    Summer 2025 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2025 AS Unit 1, question 2(c): After using the gate, a user suddenly releases the handle. Calculate the speed with which the bolt returns to its original position. Assume the mass of the bolt

  2. Q5(b)(i)

    Summer 2025 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2025 AS Unit 1, question 5(b)(i): Determine the work done against frictional forces between A and B. [3]

  3. Q5(b)(ii)

    Summer 2025 · AS Unit 1

    2 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2025 AS Unit 1, question 5(b)(ii): Calculate the mean resistive force between A and B, given that the distance AB is 8.0 m. [2]

  4. Q5(b)(iii)

    Summer 2025 · AS Unit 1

    4 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2025 AS Unit 1, question 5(b)(iii): Determine the mean rate of energy transfer between A and B. [4]

  5. Q6(a)

    Summer 2024 · AS Unit 1

    6 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2024 AS Unit 1, question 6(a): Discuss the energy changes involved in a bungee jump over one complete jump (i.e. from the initial jump height to the bottom of the jump and back up again). [6

  6. Q2(d)(i)

    Summer 2023 · Unit 3

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2023 Unit 3, question 2(d)(i): Calculate the speed of the sphere when it reaches the bottom of the circle. [3]

  7. Q3(b)(iii)

    Summer 2023 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2023 AS Unit 1, question 3(b)(iii): Calculate the total energy of the stone at height, h, given that it has a mass of 0.10 kg. [3]

  8. Q3(c)

    Summer 2023 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2023 AS Unit 1, question 3(c): The thrower believes that the stone loses 20 % of its energy every time it impacts with the water. Investigate whether or not this is true for the impact at B,

  9. Q2(b)(i)

    Summer 2022 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2022 AS Unit 1, question 2(b)(i): The spring is compressed by 0.4 m. The car is placed against the end of the spring, which is then released. Assuming that all of the spring’s energy is transfer

  10. Q2(b)(ii)

    Summer 2022 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2022 AS Unit 1, question 2(b)(ii): In reality resistive forces act on the car to the extent that the car loses 5% of its initial energy to frictional forces in moving from the spring to the top o

  11. Q4(c)

    Summer 2019 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2019 AS Unit 1, question 4(c): The roller-skater believes that the dog’s rate of doing work is the same, regardless of the length of the dog lead. Use information from (a) and (b) to investig

  12. Q7(a)(i)

    Summer 2018 · AS Unit 1

    1 mark1.4 Energy concepts
    The whole paper ↗
    Summer 2018 AS Unit 1, question 7(a)(i): Show that the work done by the motor in 32 seconds is approximately 2 MJ. [1]

  13. Q7(a)(ii)

    Summer 2018 · AS Unit 1

    3 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2018 AS Unit 1, question 7(a)(ii): Hence calculate the efficiency of the mechanism, assuming the carriages are momentarily at rest at B. [3]

  14. Q7(b)

    Summer 2018 · AS Unit 1

    5 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2018 AS Unit 1, question 7(b): At B, the carriages become disconnected from the motor and the carriages move under the influence of gravity for the rest of the ride. In moving from B to C, a

  15. Q2(b)(i)

    Summer 2017 · AS Unit 1

    2 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2017 AS Unit 1, question 2(b)(i): The student applies a principle of physics to the jumping toy to show that: 2mghmean k = x2 where: m is the mass of the toy and x is the compression of the spri

  16. Q5(a)

    Summer 2016 · AS Unit 1

    6 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2016 AS Unit 1, question 5(a): The diagram shows a marble about to be released at A on a curved ramp. C A B Explain the energy transfers that take place from the moment the marble is released

  17. Q5(b)(i)

    Summer 2016 · AS Unit 1

    1 mark1.4 Energy concepts
    The whole paper ↗
    Summer 2016 AS Unit 1, question 5(b)(i): State why the work done in pulling the sled cannot be calculated by simply multiplying 280 N by the distance the sled is pulled. [1]

  18. Q5(b)(ii)

    Summer 2016 · AS Unit 1

    4 marks1.4 Energy concepts
    The whole paper ↗
    Summer 2016 AS Unit 1, question 5(b)(ii): It takes 20 minutes to pull the sled a distance of 3.0 km over level ground. Calculate the mean power needed. [4]
All 18 questions on Energy concepts, as a list
  1. Summer 2025, AS Unit 1, Q2(c) (3 marks): After using the gate, a user suddenly releases the handle. Calculate the speed with which the bolt returns to its original position. Assume the mass of the bolt
  2. Summer 2025, AS Unit 1, Q5(b)(i) (3 marks): Determine the work done against frictional forces between A and B. [3]
  3. Summer 2025, AS Unit 1, Q5(b)(ii) (2 marks): Calculate the mean resistive force between A and B, given that the distance AB is 8.0 m. [2]
  4. Summer 2025, AS Unit 1, Q5(b)(iii) (4 marks): Determine the mean rate of energy transfer between A and B. [4]
  5. Summer 2024, AS Unit 1, Q6(a) (6 marks): Discuss the energy changes involved in a bungee jump over one complete jump (i.e. from the initial jump height to the bottom of the jump and back up again). [6
  6. Summer 2023, Unit 3, Q2(d)(i) (3 marks): Calculate the speed of the sphere when it reaches the bottom of the circle. [3]
  7. Summer 2023, AS Unit 1, Q3(b)(iii) (3 marks): Calculate the total energy of the stone at height, h, given that it has a mass of 0.10 kg. [3]
  8. Summer 2023, AS Unit 1, Q3(c) (3 marks): The thrower believes that the stone loses 20 % of its energy every time it impacts with the water. Investigate whether or not this is true for the impact at B,
  9. Summer 2022, AS Unit 1, Q2(b)(i) (3 marks): The spring is compressed by 0.4 m. The car is placed against the end of the spring, which is then released. Assuming that all of the spring’s energy is transfer
  10. Summer 2022, AS Unit 1, Q2(b)(ii) (3 marks): In reality resistive forces act on the car to the extent that the car loses 5% of its initial energy to frictional forces in moving from the spring to the top o
  11. Summer 2019, AS Unit 1, Q4(c) (3 marks): The roller-skater believes that the dog’s rate of doing work is the same, regardless of the length of the dog lead. Use information from (a) and (b) to investig
  12. Summer 2018, AS Unit 1, Q7(a)(i) (1 mark): Show that the work done by the motor in 32 seconds is approximately 2 MJ. [1]
  13. Summer 2018, AS Unit 1, Q7(a)(ii) (3 marks): Hence calculate the efficiency of the mechanism, assuming the carriages are momentarily at rest at B. [3]
  14. Summer 2018, AS Unit 1, Q7(b) (5 marks): At B, the carriages become disconnected from the motor and the carriages move under the influence of gravity for the rest of the ride. In moving from B to C, a
  15. Summer 2017, AS Unit 1, Q2(b)(i) (2 marks): The student applies a principle of physics to the jumping toy to show that: 2mghmean k = x2 where: m is the mass of the toy and x is the compression of the spri
  16. Summer 2016, AS Unit 1, Q5(a) (6 marks): The diagram shows a marble about to be released at A on a curved ramp. C A B Explain the energy transfers that take place from the moment the marble is released
  17. Summer 2016, AS Unit 1, Q5(b)(i) (1 mark): State why the work done in pulling the sled cannot be calculated by simply multiplying 280 N by the distance the sled is pulled. [1]
  18. Summer 2016, AS Unit 1, Q5(b)(ii) (4 marks): It takes 20 minutes to pull the sled a distance of 3.0 km over level ground. Calculate the mean power needed. [4]

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