Physical Sciences Grade 10 KwaZulu Natal June 2021 QP

MARKS: TIME : } KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA NATIONAL SENIOR CERTIFICATE GRADE 10 o PHYSICAL SCIENCES 7 " COMMON TEST : ; JUNE 2021 ; 50 1 hour This question paper consists of 7 pages.

Downloaded from hlayiso.com Miiysidl Ouielives Gldue tu NOU Julle 2UzZ 1 2 INSTRUCTIONS AND INFORMATION 10. Write your name and class (e.g. 10A) in the appropriate spaces on the ANSWER BOOK. This question paper consists of 6 questions. Answer ALL questions in the ANSWER BOOK. Number the answers correctly according to the numbering system used in this question paper. Leave ONE line between two sub-questions, e.g. between QUESTION 2.1 and QUESTION 2.2. You may use a non-programmable calculator. 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, etc where required. Write neatly and legibly. Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences Grade 10 NSC June 2021 3 QUESTION 1: MULTIPLE-CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A-D) next to the question numbers (1.1 to 1.4) in the ANSWER BOOK, e.g. 1.5 D 1.1. The emf of a battery is the ... energy supplied by the battery per coulomb of charge. energy supplied by the battery per unit current. potential difference across the terminals of the battery when delivering current. force exerted by the battery per unit charge. (2) G0 AOWDY 1.2. Which ONE of the following statements below regarding the AVERAGE velocity and the INSTANTANEOUS velocity of an object is TRUE? They are ... A always equal. B never equal. Cc only equal when the velocity is constant. D only equal when the acceleration is constant. (2) 1.3. When a car accelerates at 5 m-s” it means that its... A velocity changes by 5 ms" every second. B velocity changes by 5 m-s” for every 1metre travelled. Cc acceleration changes by 5 m:s* for every one second. D displacement increases by 5 m for every one second. (2) 1.4 Acarhas a kinetic energy E when it is travelling at a constant velocity. When its velocity is doubled its new kinetic energy will now be ... "HE "hE 2E 4E (2) [8] UOWU>Y Copyright reserved Please turn over

rhysicdl Ouiencves Wraue 1U Downloaded from hlayiso.com QUESTION 2 Study the circuit diagram below. The readings on ammeters A; and Az are 3A and 1A respectively. The voltmeters connected across the 6Q resistor and the resistor R both read 6V. 2.1 2.2 2.3 2.4 2.5 2.6 INSU vune 2U21 Sh Define the term current strength. What is the reading on: 2.2.1 Ammeter A3? 2.2.2 Voltmeter V2? 2.2.3 Voltmeter V1? Calculate the effective resistance for the resistors connected in parallel. If the total resistance of the circuit is 4Q, determine the resistance of resistor R. Calculate the quantity of charge that flows through resistor R in 2 minutes. Determine how much electrical work will be done by the battery in 2 minutes. Copyright reserved Please turn over (3) (2) (3) (3) [15]

Downloaded from hlayiso.com Physical Sciences Grade 10 NSC June 2021 5 QUESTION 3 A jogger starts at position A and runs 70m due west to position B. He then turns around and runs 85m due east to position C. 70m « ® B A 85m c 3.1 Define a vector. (1) 3.2 Determine his final displacement when using: 3.2.1 Position A as a reference point. (1) 3.2.2 Position B as a reference point. (1) 3.3. Determine the total distance travelled by the jogger. (1) [4] QUESTION 4 The velocity versus time graph below illustrates the motion of an object that is initially travelling in an EASTERLY direction. Its initial position at time t=0 is taken as 0 m. 4 104-4 a ~ a | \ &° i : | c 20 i T —> 2 1 2 3 4 Ss Goa es t(s) 5+ | D 4.1. Describe the motion of the object during segment AB. (1) 4.2 — In which direction is the object moving during segment BC? (EAST or WEST) (1) 4.3. Calculate the magnitude and direction of the acceleration during segment BD. (3) 4.4 Calculate the total distance travelled by the object from A to C. (2) 4.5. Calculate the object’s average speed between A and C. (2) 4.6 As the object moves from B to C, describe the motion of the object from C toD. (2) [11] Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences Grade 10 NSC yune 2UZ1 6 QUESTION 5 A motorist travelling due south at 30 m-s” applies brakes uniformly and takes 4 s to bring the car to a stop. 5.1 Define acceleration. (1) 5.2 Calculate the distance covered by the car when the brakes are applied. (3) 5.3. Determine the acceleration of the car when the brakes are applied. (3) [7] QUESTION 6 5kg A 2m B A 5kg ball starts from rest at position A that is at a vertical height of 2 m and rolls freely down a slope to position B. Ignore the effects of friction. 6.1. State the law of conservation of mechanical energy in words. (1) 6.2. Using the law of conservation of mechanical energy only, calculate the speed of the ball when it reaches position B. (4) [5] TOTAL: 50 Copyright reserved Please turn over

Downloaded from hlayiso.com Physical Sciences Grade 10 NSC June 2021 DATA FOR PHYSICAL SCIENCES GRADE 10 JUNE 2021 TABLE 1: PHYSICAL CONSTANTS NAME SYMBOL VALUE Electron charge o. -1,6x107°%C Acceleration due to gravity g 9,8 m-s2 TABLE 2: FORMULAE WAVES, SOUND AND LIGHT v=faA or c=fA l. E=hft ELECTROSTATICS a Q Q= Q,+Q, Q, 2 ELECTRIC CIRCUIT Q=I At 1 1 1 — = ++... Rp R, R, R, = Ry + Rot... V= WwW Q MOTION/BEWEGING Ve =Vj+adt AX = VAt+4adt? or/of Ay = vAt+taat? Vv, =v, + 2adx orlof v, =v,’ + 2ady Vv, +V Vv, +V AX =| 1— Jat or/of Ay =| -—— Jat : [ 2 4 ( 2 ENERGY Ep=mgh or U=mgh Ek=%mv* or K=%mv Copyright reserved

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