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Real past paper questions sorted by topic, free for everyone in 13 subjects, and an Examiners’ Edition for A Level Physics at £1 a topic.

Free · Questions by Topic · 13 subjects

Every past paper question, sorted by topic. Free. Always.

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Find your course Open this sample booklet

Contents How Markets Work (1.2)

1.2.3 Price, income & cross elasticities of demand76 Qs · 362 marks

57. Q2(b)AS Paper 1 October 2020p108

58. Q2(a)AS Paper 1 June 2025p1091

AS Paper 1 · June 2025 · Q2(a) · 3 marksAnswer ›2

1.2.3 Price, Income and Cross Elasticities of Demand

2 (a) In 2021, a bakery sold 2.5 million sausage rolls per week at the price of £1.00 each. In 2022 the price increased to £1.20. The price elasticity of demand was estimated to be −0.2.

Calculate the new quantity of sausage rolls sold per week in 2022 after the price increased, ceteris paribus. (3)

Mark scheme · Q2(a)‹ Question3

Identifies the formula for PED (may be implicit)1

−0.2 = x ÷ +20, so quantity demanded falls 4%1

4% of 2.5m is 100 000, so 2.4 million1

Open the full Economics booklet
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Examiners’ Edition · Edexcel A Level Physics

Aiming for an A or A*? Stop losing easy marks.

  1. See the mistake examiners flag year after year, topic by topic.
  2. Learn the fix, and what examiners saw in the exam.
  3. Practise and mark it with original questions and full mark schemes.
Choose your topics Read a free sample first

A Level Physics · Topic 6

Further Mechanics

Examiners’ Edition: Securing A*s

10 common mistakes · 20 practice questions · full mark schemes

6.1 Impulse, momentum and collisions A Level only

1 Change in momentum is a vector

✗ Common mistake

Subtracting the speeds when an object bounces back, so the change in momentum comes out far too small.

1
✓ Do this instead

Momentum p = mv is a vector: choose a positive direction and give every velocity a sign. A ball hitting a wall at 12 m s−1 and rebounding at 8 m s−1: Δv = (−8) − (+12) = −20 m s−1, not 4.

2
In the exam

“On a bouncing-ball question, a fair proportion got the sign of the change in momentum wrong, and even more just gave the final momentum.” Jun 2016, AS P1

Examiners flagged this in 4 exam series, 2016 to 2023

Question 1.1 · Check itMark scheme ›3

A ball of mass 0.15 kg hits a wall at 12 m s−1 and rebounds along the same line at 8.0 m s−1. It is in contact with the wall for 0.040 s. Calculate the average force exerted on the ball by the wall. (3)

force = N

Mark scheme · Q1.1‹ Back to question

Δp = 0.15 × ((−8.0) − (+12)) = −3.0 kg m s−11

F = Δp ÷ Δt = 3.0 ÷ 0.0401

75 N1

Common wrong answer: subtracting the speeds gives Δp = 0.60 kg m s−1 and a force of 15 N.

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