Tiêu đề 2016 GCE A level H2 Physics 9646 Ans.pdf ✅

2. (a) From graph, F = 6.4 N => a = F/m = 6.4 / 4.0 = 1.6 m s-2 (b) (Note: Given that Cambridge provided a grid, you should mark out the Y-Axis scale completely. You should NOT just simply just draw the horizontal line anywhere and indicate a single 1.6 on the Y-Axis.) (c) Impulse = Area under F-t graph = (6.4)(1.4) = 8.96 kg m s-1 (d) (Note: Given that the object was at rest initially, initial p = 0. Hence, final momentum at each t = cumulative area under F-t graph. Also, given that a grid was provided, you should indicate the full scale and also minimally plot each critical point accurately i.e. when t = 1.4, 2.0, 3.0, 4.0) 0.5 1.0 1.5 2.0 5.0 10.0 15.0 20.0 25.0