# Physical Sciences Grade 12 North West Mock 2020 Memo > Grade 12 Physical Sciences memorandum from the North West Mock Exam 2020, 7 pages. Read online or download the free PDF. - Page: https://www.hlayiso.com/library/2020-north-west-physics-memo/15277504-a7dc-432f-99a4-07f1ce556e49 - Updated: 2026-09-27 - Subject: Physical Sciences - Grade: Grade 12 - Document type: Memorandum - Year: 2020 - Exam period: North West Mock Exam - Curriculum: CAPS - Pages: 7 Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 12](https://www.hlayiso.com/library/grade-12) › [Physical Sciences](https://www.hlayiso.com/library/grade-12/physical-sciences) › [Physical Sciences Grade 12 North West Mock 2020 Memo](https://www.hlayiso.com/library/2020-north-west-physics-memo/15277504-a7dc-432f-99a4-07f1ce556e49) ## About this document Physical Sciences · Grade 12 · North West Mock Exam · 2020. Memorandum, 7 pages. Read online or download the PDF. Read it free online on the page above; download the PDF from there. ## Document text Text extracted from the PDF. Layout, diagrams and tables may not survive extraction. ### Page 1 TOU ED I UM 03030000 ~ education Lefapha la Thuto la Bokone Bophirima Noordwes Depariement van Onderwys North West Department of Education ~ NORTH WEST PROVINCE NATIONAL SENIOR CERTIFICATE/ NASIONALE SENIOR SERTIFIKAAT GRADE/GRAAD 12 PRS ESRSSSSR SS ESSE SSER SSSR SES RS ESSER Sy Ht PHYSICAL SCIENCES: PHYSICS (P1)/ : u FISIESE WETENSKAPPE: FISIKA (V1) a " a " SEPTEMBER 2020 0 a i MARKING GUIDELINES/NAS/IENRIGLYNE x “es BSS SSS SSE T eS ese ees eeeee SSS 288588888 2” MARKS/PUNTE: 150 These marking guidelines consist of 7 pages and a cognitive grid of 2 pages/ Hierdie nasienriglyne bestaan uit 7 bladsye en ‘n kognitiewe tabel van 2 Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief | bladsye ### Page 2 Physical Sciences ogwnloaded fr om hlayisa,¢o! ember 2020 NSC/NSS — Marking Guidelines/Nasienrigiyne QUESTION 1/VRAAG 1 (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) [20] QUESTION 2/ VRAAG 2 Mctto Litig IS $ Igh oon Funpo von weioiclehes in mementuny - 2.1 Ifa net (resultant) force acts on arvobject, the object will accelerate in the direction of the net force. The acceleration is directly proportional to the net force and inversely proportional to the mass of the object/Wanneer fh netto (resulterende) krag op in voorwerp inwerk sal die vorrwerp versnel in die rigting van die krag. Die versnelling is direk eweredig aan die krag en omgekeerd eweredig aan die massa.“ v (2) A 4 T BY. t t i Mw 6) 2.3 Fy=mg w =(4+2)08v =588N vo (3) 24 fe=peN M = 0,3°58,8 = 17,64 N ¢ (3) 2.5 3kg 6 kg Fret = mav Fret = ma W-T=mea T-f=mea 29.4-TY =3av 1 T-17,64=6:av ....2 142 29,4 — 17,64 = Qeav’ a=1,31 mstv (6) [19] Copyright reserved/Kopiereg voorbehou ### Page 3 Physicel scien Own! paded ah rom h layiso. COMsertember 2020 NSC/NSS — Marking Guidelines/Nasienriglyne QUESTION 3/VRAAG 3 3.1 No/Nee. Constant velocity/Konstante snelheid: AFa=w BFa=wesin® v (3) 3.2.1 W=FgreAX « cos © = megesin 6 * AX * cos 0° ¥ = 1250: (9,8) ¥ + (2) 18-1 ¥ = 110250 Jv (4) Wo _ 110250 ¥; 3.22 Perv =v = 3062,5W (3) 3.3. The total mechanical energy (sum of gravitational potential energy and kinetic energy) in an isolated system remains constant/Die totale meganiese energie (som van die gravitasie potensiele energie en kinetiese energie) in in geslote sisteem bly konstant. “ (2) 3.4. Emtop = Em bottom. mgh + % mv? = mgh + % mv? 1250(9,8)(9) + 0 = 0+ % (1250) v?v v= 176,4 v= 13,28 mest (3) [15] QUESTION 4/VRAAG 4 4.1. An object moving under the force of gravity only/n Voorwerp wat slegs onder die invioed van gravitasiekrag beweeg.” v (2) 42, v=%=49=22 Vv mt=4178 At At Ay = vie At + ; eat? ¥ =040,5°9,8°4,172 ¥ = 85,07 - 85,21 mv (Range: 85,07 - 85,21) (4) 4.3. The product of the resultant/net force acting on an object and the time the resultant/net force acts on the object. “ v /Die produk van die netto krag en die tyd wat die krag op die voorwerp inwerk. “ (2) Copyright reserved/Kopiereg voorbehou ### Page 4 Physical Sciences oh Qwsnls al ded fr om HlayisQ,GO'Mverc020 NSC/NVSS — Marking Guidelines/Nasienriglyne 44. weavitadt v = 0+9,84,17 v = 40,87 mst FretAt = mAv = m(vr— vi) Fnet?1,2 “ = 90(0 - 40,87) v Fhet= - 3065,25 N Fret= 3065,25 NV (Range: 3065,25 — 3065,95) (6) A yf 45. Frt= Pv Ap remains constant/bly konstant At increase hence the force decreases or Force is indirectly proportional to time.“ /At verleng, dus sal die krag verminder of die krag is omgerkeerd eweredig aan die tyd. . (3) [17] QUESTION S/VRAAG 5 5.1. Observed change in frequency when the observer and source move relative to each other/ waarneembare verandering in frekwensie wanneer waarnemer en bron relatief tot mekaar beweeg.v (2) 5.2 800Hzv (1) _VFV pf 63 hess 950V = (=) ¥ B00¥ V = 53,68 mest v7 (5) 5.4 Velocity (vs) mes _y 800 N a 3 i