CAPE Physics Unit 1 · May/June 2025 · Paper 2

34 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)(i)2 marksState, in words, Newton's second law of motion.
2. 1(a)(ii)2 marksState the principle of conservation of linear momentum.
3. 1(a)(iii)2 marksDifferentiate between a 'perfectly elastic collision' and an 'inelastic collision'.
4. 1(a)(iv)2 marksExplain what is meant by the 'impulse of a force'.
5. 1(b)(i)1 markWrite an expression for the total momentum of the system before the collision.
6. 1(b)(ii)1 markWrite an expression for the total momentum of the system after the collision.
7. 1(b)(iii)1 markWrite an expression for the total kinetic energy of the system before the collision.
8. 1(b)(iv)1 markWrite an expression for the total kinetic energy of the system after the collision.
9. 1(c)(i)4 marksCalculate the velocity, v2, of the larger ball after the collision.
10. 1(c)(ii)5 marksDetermine whether the collision is perfectly elastic or inelastic.
11. 1(d)(i)2 marksState Newton's third law of motion.
12. 1(d)(ii)3 marksSketch a diagram to show ALL the forces acting on the object.
13. 1(d)(iii)2 marksSketch a diagram to show ALL the forces acting on the inclined plane.
14. 1(d)(iv)2 marksCalculate the acceleration of the object as it moves down the inclined plane.
15. 2(a)(i)1 markName the process by which the human eye adjusts its focus to see objects clearly at varying distances.
16. 2(a)(ii)9 marksComplete Table 1 by describing myopia, hypermetropia, and astigmatism, stating the cause and the corrective lens needed for each.
17. 2(b)3 marksPlot a graph of magnification M versus image distance v on the axes in Figure 2, and draw the line of best fit.
18. 2(c)(i)5 marksUse the graph on page 11 to determine the focal length, f, of the mirror given that M = 1 - v/f.
19. 2(c)(ii)1 markUse the graph to determine the image distance when the magnification M = 0.6.
20. 2(d)(i)4 marksCalculate the image distance of the person.
21. 2(d)(ii)5 marksCalculate the magnification AND the height of the image on the film of the camera.
22. 2(d)(iii)2 marksBased on your results from (d)(i) and (ii), comment on the nature of the image formed on the film.
23. 3(a)4 marksComplete Table 3 to state the thermometric property and ONE use for both a mercury-in-glass thermometer and a constant-volume gas thermometer.
24. 3(b)2 marksDistinguish between heat transfer by conduction and heat transfer by convection.
25. 3(c)(i)2 marksDefine specific heat capacity.
26. 3(c)(ii)2 marksDefine specific latent heat of fusion.
27. 3(d)4 marksAssuming a human has 0.03 m thickness of body fat and skin with a total surface area of 1.7 m², calculate the heat reaching the skin in half-hour if the body temperature is 37 °C and skin surface temperature is 34 °C…
28. 3(e)(i)2 marksCalculate the heat gained by the ice from the punch in warming up to the melting point.
29. 3(e)(ii)2 marksCalculate the heat gained by the ice in changing phase from a solid to a liquid.
30. 3(f)(i)1 markWrite an expression for the heat gained by the melted ice in warming up to the final temperature, T.
31. 3(f)(ii)1 markWrite an expression for the total amount of heat lost by the punch.
32. 3(f)(iii)3 marksHence, determine the final temperature, T, of the mixture.
33. 3(g)(i)4 marksPlot a graph of saturated vapour pressure, P, versus temperature, T, on the grid provided in Figure 3, and draw a smooth curve through the points.
34. 3(g)(ii)3 marksUse the curve in (g)(i) to determine the relative humidity on a day when the temperature is 32 °C and the saturated vapour pressure of water in the air is 2.0 × 10² Pa.