SAJC_H1_PHY_P1

1 SAJC 2016 Preliminary Examinations / 8866 [Turn Over] Class Index Number Name 15 ST. ANDREW’S JUNIOR COLLEGE JC 2 2016 Preliminary Examination Paper 1 PHYSICS, Higher 1 8866/01 20th Sept 2016 1 hour Instructions to students: There are thirty questions in this paper. Answer all the questions. For each question there are four possible answers A, B, C, D. Choose the one you consider correct and record your choice in soft pencil on the separate Optical Mark Sheet (OMS). Each correct answer will score one mark. Double entry of choices will be considered as a wrong answer. A mark will not be deducted for a wrong answer. This question paper consists of 12 printed pages including this page.

2 SAJC 2016 Preliminary Examinations / 8866 [Turn Over]

3 SAJC 2016 Preliminary Examinations / 8866 [Turn Over] 1 Three pairs of physical quantities are listed below: I. momentum and moment of a force II. moment of a force and energy III. power and moment of a force In which of the pairs do the quantities listed below have the same base units? A I only B II only C II and III only D None of the pairs 2 A student carries out an experiment to determine the gravitational acceleration, using a pendulum, and obtains a value 9.81 m s -2. The uncertainties in the measurements are shown. Uncertainty in length L of pendulum = 0.7 % Uncertainty in period T of pendulum = 0.1 % The equation for the period T of pendulum is  2 LT g How should the answer for gravitational acceleration be stated? A  -2(9.8 0.1) m s B  -2(9.81 0.09) m s C  -2(10 8) m s D  -2(10 9) m s 3 For which quantity is the magnitude a reasonable estimate? A frequency of radio wave 500 pHz B mass of an atom 500 g C wavelength of green light 500 m D de Broglie’s wavelength of an electron 500 pm 4 A ball, after having fallen from rest under the influence of gravity for 5 s, crashes onto a horizontal glass plate, thereby losing one-third of its velocity. If it then reaches the ground in 3 s, find the height of the plate above the ground. A 93 m B 123 m C 142 m D 265 m

4 SAJC 2016 Preliminary Examinations / 8866 [Turn Over] 5 A particle P is projected with velocity u1 at an angle of 30 ˚ with the horizontal. At the same time, another particle Q is thrown vertically upwards with velocity u2 from a point vertically below the highest point of path of P. The necessary condition for the two particles to collide at the highest point is A u1 = u2 B u1 = 2u2 C u1 = u2 2 D u1 = 4u2 6 A ball is released from rest above a horizontal surface and bounces several times. The graph shows how y varies with time t What is the quantity y? A vertical velocity B horizontal velocity C vertical displacement D horizontal displacement