IGCSE Physics Topical Paper 4 Q9. 0625/ON/201543/01 Topic 2: Motion A plastic ball is dropped from the balcony of a tall building and falls towards the ground in a straight line. Fig. 1.1 is the speed-time graph for the falling ball. (MH PHOTO COPY (F-10-PWD-Saddar-Bahria Phase-7) speed 8.0- m/s 6.0 4.04 2.0 1.0 κανονα την 2.0 3.0 time/s Fig. 1.1 sma (a) State and explain, in terms of forces what is happening to the speed of the ball between time t = 2.0s and t = 3.0s. Uniform speed! equal weight [2] (MH PHOTO COPY (F-10-PWD-Saddar-Bahria Phase-7) E (b) On Fig. 1.1, mark a point P on the line where the acceleration of the ball is not constant. [1] (c) Using Fig. 1.1, (i) calculate the acceleration of the ball between t=0s and t = 0.25s, 9=AV At a=204 0025 acceleration = (ii) estimate the distance that the ball falls in the first 3.0s. 906M/S2 ..[2] distance = 19 M.H Photo Copy Shop # 4, Sea-Sun Plaza F-10 Markaz, Islamabad Tel: 0300-5328427-051-2103109 [2] [Total: 7) 19
how to solve b ii)
