Available practice: 71 of 75 marks. Parts 5(a)(ii), 5(b)(i), 11(a) await marking support. Scores cover available parts only. Theory Paper 2: Section A is compulsory and Section B offers a choice of two questions. Four published mark-scheme discrepancies across the two variants are held from automatic marking.
(a)Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. On Fig. 1.1, mark and label a point where the car has a non-uniform deceleration.
[1 mark]
(b)Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. Calculate the deceleration of the car at t = 3.0 s.
Answer guidance
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
[2 marks]
(c)Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. Explain, in terms of the horizontal forces that act on the car, why its speed is constant at t = 1.0 s.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[2 marks]
5054/22/M/J/16Cambridge O Level Physics 5054 · May/June 2016 · Paper 2 variant 2 · Question 1