Physical Sciences Grade 12 P1 March Test 2016 Paper & Memo

Basic Education KwaZulu-Natal Department of Education REPUBLIC OF SOUTH AFRICA jf RRR SERRE RRR RSS SRR REESE SES RRS BERR REE R ERS : PHYSICAL SCIENCES: PHYSICS (P1) : H COMMON TEST " " MARCH 2016 : MARKS: 50 TIME : Thour This question paper consists of 6 pages and a 1-page data sheet. Copyright Reserved Please Turn Over

Physical Sciences P1 2 : March 2016 Common Test NSC INSTRUCTIONS AND INFORMATION TO CANDIDATES 10. 11. 12. Write your name on the ANSWER BOOK. This question paper consists of FOUR questions. Answer ALL the questions in the ANSWER BOOK. Start EACH question on a NEW page in the ANSWER BOOK. Number the answers correctly according to the numbering system used in this question paper. Leave ONE line between two subsections, for example between QUESTION 2.1 and QUESTION 2.2. You may use a non-programmable calculator. You may use appropriate mathematical instruments. You are advised to use the attached DATA SHEET. Show ALL formulae and substitutions in ALL calculations. Round off your final numerical answers to a minimum of TWO decimal places. Give brief motivations, discussions, et cetera where required. Write neatly and legibly. Copyright Reserved Please Turn Over

Physical Sciences P1 3 March 2016 Common Test NSC QUESTION 1: MULTIPLE- CHOICE QUESTIONS Four options are provided as possible answers to the following questions. Each question has only ONE correct answer. Write only the letter (A - D) next to the question number (1.1 — 1.3) in the ANSWER BOOK, for example 1.4 D. 1.1 1.2 1.3 A ball is thrown vertically upwards from a point P above the ground. The ball is caught at point P as it falls on its return. Which ONE of the following statements concerning the rate of change of the velocity of the ball, is TRUE? A It is directed downwards. B It will be in the same direction as the displacement. c It changes from a negative value to a positive value. D It becomes zero when it reaches its maximum height. (2) The sketch below shows three 1 kg mass pieces placed on top of a trolley of mass 2 kg. 1kg 1 kg 1 kg F—————> 2kg OO A force of magnitude F is applied to the 2 kg trolley. The trolley experiences an acceleration of a. If one of the 1 kg mass pieces falls off while F is still applied to the 2 kg trolley, the 2 kg trolley will accelerate at... A 0,8a B a Cc 1,25 a D 2a (2) A spaceship has a mass of X on Earth. It is sent into space and lands on a planet which has a mass twice that of the Earth and a radius % that of the Earth. The mass of the spaceship on this planet is . . . A “AX B AX Cc X D w%wX (2) [6] Copyright Reserved Please Turn Over

Physical Sciences P1 4 March 2016 Common Test NSC QUESTION 2 (Start on a new page) A block of mass 50 kg accelerates at 2,50 ms’ downa rough surface that makes an angle of 25° with the horizontal as shown in the diagram below: PS The block moves down the incline. Ignore the effects of air resistance. 25° 2.1 Drawa labelled force diagram showing all the forces acting on the block as it accelerates down the rough surface. 2.2 State Newton’s Second Law of Motion, in words. 2.3 Calculate the co-efficient of kinetic friction between the 50 kg block and the rough surface. (3) (2) (7) [12] Copyright Reserved Please Turn Over

Physical Sciences P1 5 NSC QUESTION 3 (Start on a new page) The position-time graph (not drawn to scale), represents the motion of a ball of mass 0,20 kg that was projected vertically downwards from a point, P above the ground. The ball hits the ground and immediately bounces to a maximum height of 44,10 m.(point Q) 44,10 y(m) 0 1,50 t(s) The collision of the ball with the ground is ELASTIC. Ignore the effects of air resistance. 3.1 3.2 3.3 3.4 3.5 3.6 Copyright Reserved How long, in seconds, does the ball take to hit the ground from point P? Calculate the velocity with which the ball bounced off the ground. Write down, without performing a calculation, the magnitude of the velocity with which the ball hit the ground from point P. Give a reason for your answer. Calculate the magnitude of the velocity with which the ball was initially projected downwards from point, P. Sketch a velocity-time graph to show the motion of the ball from point P to point Q . Indicate the following on the graph: (a) _ initial velocity of the ball. (b) time taken by the bail to reach the ground from point P. (c) velocity with which the ball strikes the ground. (d) velocity with which the ball bounces off the ground. Use the graph that you have sketched in question 3.5 above to determine the height P from which the ball was thrown. (You may not use equations of motion) March 2016 Common Test (1) (4) (2) (4) (5) (3) [19] Please Tum Over

Physical Sciences P14 6 March 2016 Common Test NSC QUESTION 4 (Start on a new page) Two blocks of masses 2 kg and 5 kg respectively move towards each other on, a horizontal frictionless surface, with velocities of 3 m:s" to the right and 2 m- s" to the left, as shown below: 2m-s" 3ms" ——> 2kg 5kg The blocks collide, After the collision, the 2 kg block moves to the left at 1 m-s‘. 4.1 State the Principle of Conservation of Linear Momentum. (2) 4.2 Calculate the velocity of the 5 kg block after the collision. (4) 4.3 During the collision the 5 kg block exerts a force of magnitude 10 N on the 2 kg block. Calculate the contact time for the collision. (4) 4.4 Write down the magnitude of the force that the 2 kg block exerts on the 5 kg block. (1) 4.5 How does the impulse of the 5 kg block compare with that of the 2 kg block. Give a reason for the answer. (2) [13] TOTAL: [50] Copyright Reserved Please Turn Over

Physical Sciences P1 7 March 2016 Common Test NSC DATA FOR PHYSICAL SCIENCES (PHYSICS) GRADE 12 GEGEWENS VIR FISIESE WETENSKAPPE (FISIKA) GRAAD 12 TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES NAME/NAAM SYMBOL/SIMBOOL VALUE/WAARDE Acceleration due to gravity ve Swaartekragversnelling g 9,8 ms Universal gravitational constant G 6,67 x 10 N.m2.kg? TABLE 2: FORMULAE/TABEL 2: FORMULES ; MOTION/BEWEGING Vp = Vj tat Ax=viAt4dadt? orfof Ay =v Ate taAt? Ve +Y; ve +, vi? = V2 + 2adx orlof v,? =v, +2aAy | AX= So a a or/ofAy = = a Jat 1 K=E, =—mv? FORCE/KRAG Fret = Ma p=mv FioMt= = Ap=mv ¢ mv; Fg= Ee Gmima2 2 r f,"™ = ,N f= BN Copyright Reserved

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