0625/42 · May/June 2025
Theory (Extended) · 80 marks · 10 questions
- Question 17 marks
Describe motion from a speed–time graph, find distance and deceleration from a tangent.
- Question 27 marks
Moments, centre of gravity, and the mass and density of a metre rule.
- Question 37 marks
Momentum of coupling trains and average force from a change in momentum.
- Question 47 marks
Thermal energy transfer from different surfaces, and conduction in metal and wood.
- Question 59 marks
Measuring the speed of sound, and the wavelength of a radio signal.
- Question 67 marks
Focal points, finding an object from its image, and correcting long sight.
- Question 710 marks
Electric field, charging by friction, energy in kWh and current.
- Question 89 marks
Parts of a generator, induced e.m.f., and currents and resistance in a circuit.
- Question 97 marks
Background radiation, a decay equation and medical uses of radioisotopes.
- Question 1010 marks
Planetary data, free-fall time and the life cycle of a massive star.