Physics · 2017 · November · Paper 2 · SL · Question paper

12EP01 N17/4/PHYSI/SP2/ENG/TZ0/XX Physics Standard level Paper 2 1 hour 15 minutes Tuesday 31 October 2017 (afternoon) [Personal identifier removed] 11 pages Instructions to candidates • Write your session number in the boxes above. • Do not open this examination paper until instructed to do so. • Answer all questions. • Answers must be written within the answer boxes provided. • A calculator is required for this paper. • A clean copy of the physics data booklet is required for this paper. • The maximum mark for this examination paper is [50 marks]. 8817 – 6505 N17/4/PHYSI/SP2/ENG/TZ0/XX 12EP02 – 2 – Answer all questions. Answers must be written within the answer boxes provided. 1. A girl on a sledge is moving down a snow slope at a uniform speed. sledge snow slope horizontal region of snow (a) Draw the free-body diagram for the sledge at the position shown on the snow slope. [2] (b) After leaving the snow slope, the girl on the sledge moves over a horizontal region of snow. Explain, with reference to the physical origin of the forces, why the vertical forces on the girl must be in equilibrium as she moves over the horizontal region. [3] .......................................................................... .......................................................................... .......................................................................... .......................................................................... .......................................................................... .......................................................................... (This question continues on the following page)