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111_Midterm_part1 - 53:51-25 11 FIRST WHIHATIUH Jan an...

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Unformatted text preview: 53:51-25 11:. FIRST WHIHATIUH Jan. an, 1991 .ssr- EpIt-in ' 5:0D AH REE. INST. GRADE m—fl—‘l—H—H_ Thu: significant :Eiqur-s suriiss. Tim. a: “an: s: minus-s, slam-d husk, sills-ulster: Illswsd. Plus: Ul'itfl yarn: nasal and gnu: suit—“inn hatsustsr’s sun as fish pug... This cm ssnsis‘: sf 5 true-salsa quastisn, 5 multiple choice questions and three psablsms {Pssblems A, I. 1:1. Chuck. now that. ysu haw n canal-tn “an. Assslesa'siun sf gravity - g - 9.: mfs'. sin in” - LEDQ :ss 3fl'- LESS sin 55‘ - mass ass 55' - 13.5% sin 45':- 5.1m? ass 45' - 1:30? PHEEICE 13L]. nast- EXMEINATIDH Jan- 30. 1991 Prof. Epstein 9:ua AH EART I. Trua - False (4 points aach queaticn, 2D paints tntal] Eircln curt-ct luau-r. l. A dacalarating obj-ct nova: with constant valncity. T F 2. A baseball ball is hit at an angle a! 5D' tn the ground. M: thll highest paint in its path it in not accelerating sincn its vurtical velocity is turn. T f 3. Ifthavectan-E+E+fi 'I'han'fi-fi-I+E T F 4.‘ Neglecting air ratistancu, the maximum distance T F a volley ball in hit {assuming canatant speed] - occurs it it 15 hit at an anal. or en tu tha hnriznn. “ 5. An nh1act can navar hav- a positive valacity and a T F nanntlvq acceiaratinn. 02 PHYSICS 111 FIRST EKAHIHATIUH Jan. :0, 1991 Pref. Epstein 5:131: AH mm: ' INST- PART II. Multiple chaise [5 paints each detract response, 39 points total]. tirel- the letter preceding the best respense. 5, A hht air hallucn travgla 1: kn sauth, than 9 km west, then 4 km north. The magnitude of the resulting displacement from the arigih ia a} es.t ks b} 12.0 km :1 25.D km a: 1?.0 in e} 145. km 7. Tue veeeezs of magnitudes 11 units and 3 units are added. The vector sun has a magnitude or a} 5 units. b} 14 units a} either 14 or E units. d) a value less than a: equal te 14 unite and greater than or equal tn 5 units. i} name of the eheve. 5.. Dane throws a hall straight upward and catches the hall at the same Spat where it was first released. While the hell is in flight. its acceleration is + I] always directed dawnwardl. 1:) always in the same directien as its velocity. E} always directed appetite te its velocity. " d1 greater when the ball is falling than when the hell in rising. 2] sere at the highest peint. 9. A snertsear traveling at 1am knfhr is inn 1 behind a minivan traveling at an knfhr eleng the same straight highway in the same direction. Haw lung deea it take fer the spertscar ta reach the minivan? a} Efl s h! is e e! 5 s d? 2 a e} none at the ahdva {)3 H‘ESICE 111 FIRST EXAHINATIDH Jen. an, 159.1 Pref. Epgtein i=5”: AH IHST. M_._..____.__.—.._———-——-"— iii. In the tellwinq, e is the eenetent acceleration. v i: veleeity efter tine 1:. d is displacement after t. _end 1r. in veleeity at 1'. - CI. :1 is assumed - d It 1: - u. {teeter noteteen has been emitted.) Pick nut the ene inderreet expreeeien . a} t - {v—vtjjd . h) d - v.1. + if: at“. 1:} e = [vi-viytzd} d} d - [f-vfiwze e: v -= v. + at 11- A cyclist traveling at 1B knit: cheerves a child in the reed ltd n item her- If she applies her breaks to come to rest in m befere reaching the mild, what is the magnitude er. her acceleratien [in 135']? a) £1.33? tr} 13.335 'e} 4.5:: d} 5.:10 e} none at the above ODE"; PHYSICS 111 FIRST ExAHINhTIcH Jen. an, lflfil Prtf- Epstnia 9:00 AM Grade Hm INST. PART III. Prehlems A, E; and : must he warhed nut in detail. Shaw 5;; flung tn reeeive any eredit ter turret: enraere. The value a! the prdhlea is titan in parentheses. h. h.heet travels at 3 If! in the hertherly directien acres: I ride river. ’ ht the same time the current in the river waves at 1 If! in an easterly directien so that the heat it drlgqed daunetreen el 1: trusses the river. i} Graphically show the resultant releeity of the heat with respect tn the ehere {5 rte.) I 111 At what is the magnitude and angle {with respect tn the easterly directien) ef the that's resultant welterty.1n- 13'- ' {5 pts} 3 - . ..._....._._.. [5 P13} a. truth travelling at 35 his hits a pole and stops in 3 t. Find the attelerltien e: the driver and the time far the truth to tame tr a step after the eellislen. II. It [5 pts] t It '1[5 pts] I’H‘EEIE 111 Fmsr WIHAIIDH Jan. JD, 1991 rut. 3:35:11; 9:111: 11-: HST. End. __ m______———-—— c. 1 plane: mlinqvlt I up“: at 13913 M: in a nartharly directianlt I height at 5 1:: WI thfl ground suddmly clulbs at an :11qu ut 45":1: the hex-5.2m. Hamming this speed and anal.- i‘: rnlmu I. pznj-ctilt as it pull: through 7 1:! in altitudn. a} What is the ugniMe a: the hariznntal Valncity a: tu- praj-gtil. art-r. Illllll {5 PEI-1 'L b} What is the magnitude a: the. vaztical velucity at 1:11: prnjectile ' immediately 11:11:: release {5 91:51? [1-5 PHEEIES 111 ' FIRST 311111111101! Jun. 3D, 1591 r . Egstgj; Ema AH mum INST. mag 1:] Han lung dons it take rat thi ijlfltill tn ruth‘thu firth? {5 put] 1'1} What is the maximum height than the ground achieved by the prtjectile? [5 pts.) 1!] Had It: nurth {henna the ulna- paint} :1er the prajactili trawl _ harm-- inpaut with thl ground? (5 131:.) ' mfiflcs 111 FIRST ETCAJ-HNATIGN APRIL 21}. 1992 ::r. Rollie ' 2 PM Page 1 of 15 1‘ 1.- . 1 Fl Il-I Ree. Iosuucor Glade Two significant Ema suffice. ' _ Ema is cloud book. Cal-211121335 allowed, but aim: memory must be dented before exam Wmm'name legibly end your redufiou insu'uctor': name on each page. Tuis emfiuafion has two sections 3} SECTION I IS THE LAB QUESTION. _ . I: cousin: of one Equesuoo. This quesu‘ou has about the some efl'eet on your eourse and: as 1 5—point. question in Senior: IL The scores on Section I will no: be curved. 1:) SECTION II is the Midtenn Examination. II cousins of 9 multiple choice queszions and 4 problems {Problems BI. 13"... BE. and B4}. The Star-L1 on Seeu'on II will he cur-rem Gui now that you have u oompleee exam. You have a natal 1:543 mm to complete both seedous. 'oJuu of physical constants: Aeeeleeufiou or 311311}! - g I 9.3 Info: DEF Dr. Rani: - ‘ 2 PM Page 2 Hi 5 fine ' Ree Erector SECIIDN I. LL'B QUESTION TEE: question 1': wenh S pains. Cireie the 1ette:preeeding the beat answer. 3|— In the 1:1: nut-guinea: en the measurement at velpfily and :mieminu. yet: made a graph of Telnety' vmfimees forue'eet mlmmfluhadgeuentheresuiu shaminthe figure helm. I: the ebéneggfiu-uen item mfia‘nhfi '1 r. l‘lll'rl'ulll .1¢+p1rll III! I. 41'11.-"._—..l—"""; .: Wm M“ WIN-'4'- mum-“mm '1'::..'..:'.:.H. W"" ’.....1.- '9' gm. '1‘ mil-F ---:::‘I::Ir::-L::::::11:;1::--r--: ' m.. --I .. 1 m M3553 ¥m_::~;:;;;;::::l: :j'q'....... . Wm- I .I. _________ I m I.“j{.:. . ............ . —.—'" --"*~-' """"" 'j:,, ,, .. urn: ":"":':'.':::.. llllllllll o 1 '1. 3 ’1‘ 5 1’: [In S) 3 fine avenge Velocity equals the Manama: velndty ever: the time Interval team. 1:- me neeeletefieu i5 zeta. _ . c The eeeeletetien is inceasipg mt]: tune at a com: me- Tne accelfl'afiun is 1-5 mfg. e The leeelentiun is L2 Infra Tue aezlemfien 1‘: I153 mfr. 010 Dr. Rani: 2 PM Page 3 er 5 Home ' Ree. Instructor sat-not: n. mot-asst mmsnon mar .L Midfiple cseiee (s points‘eaoh). Circle the letter preceding the best answer. 1.. a. 5. Pl Which of the renewing physioll quantities ts MDT 1 vector? I do I: fights: o displacement velocity e acceleration Em threw a halt straight and taught the hall _1fl s late; at the same spot where it ores first released. While in the air e hall reached a mum altttode ot‘.’ 5.0 11:. The lust-age velocity ofthehsfloverthelflstinteintertralwos a B. It 1.3 mfs. e 15 nifs. 5.0 mfs. c none of the above. $31k drops a sheet of paper and a 2 kg roe]: SEPARA‘LELY from the same attitude at the same me. If air resistance acts on both ohJeots. the: a} the rock hits the mud first: without a: -.sistanoe both ohjeets hit the ground at the same time. h} the rock hits the ground first: without air resistance the rock hits the ground first - e hoth hit the pound at the same time: without air resistance hoth hit the ground at the some one. . d) the rod: hits the ground first; without air resistance the paper hits the ground first. fit. our travels for 9.5 I 1fl3_m at. a $535.: of 33 111 s. Sporting a Billion car. the driver abruptly slows down to 213' :on and eonttoues at mffi for e next 41.5 :t 1 to. What was the average speed "'ior the nip? 3 E Inf: 1: 2? HIKE I: 25 to}: ' E Elf: e 20 tofs if: the Mn of the velocity vector of a ear is opposite to the direction of it acceleration vector, on a the tear must be moving in. the negative ledirflflfiflfl. b themsmustbetttrning. e thetnrtousthe ' down. the on: must be e . . e this situation is nsgfphystgfiy possible. A :1: drives 6.0 Iota east. then 14 km north, and then 1.5 km 1«rest. The magnitude of the resulting displacement from origin is goneofthebeiow. 35km, I: 231111. at) 211cm. fl} lim. 6-" Dam ' 2PM ' Pagclnffi Ham: 7. E. Rec. Imuunur D11 1211:: anab‘ccistaniu finmrmfillfiamgafkflmfllfifls. Starlingfrumrefihuw mama 1i}: ubjengallmzflgs‘? [Neglaaurrmmnmj _ I mafihcbelw '- h 1.0:: . I: 41mm 16111 t. 641:; ' ‘ ' down with a cad ui‘ 10 mi: rdnu've u: the grgund._H¢adLng dun-E Eng-3,33%“; ' a: fimtflgfimr mfliqéplfar 15 : aim: runwpy. Dunn; thus grown. the. g c ‘ Ivcrage zeal-maxim of the p has mammdc = _ mil-55 and fireman _____, a #3; as: I: 4.23: m I: 11.21; cut {1.21: ms: - a non: of the above. - * ' 1‘ nffifimsatannnlcofdfl”tutlnehafizqntaL fiefigfirflfim nenfldgmclnrmimflndq of : bail whangit rcachcs maumum alumde [112 Dr. Rani: 2 PM Page 5 mi 5 Name Ree. Insu'ucmr PART 3. Problem: E BE, and B4 must he worked in derail. EHQW m WQEE to receive ere-ii: fer mgr-E: were. The value of the prnhiem is shown I11 Pmnrhflfli my BL Arogiristhmwnverfiesfl? ginmwsrds withaninifislgeed ufiflmfs free: theta]: of: hniidmgflmhjgh. Mummespeedoftherod: enhislsmaboveflzeground? Negleeuirresistanne. (10 points) ' ' . Bl A. feetbafl is kicked hum the gram-1d With an initial velueity of 23 refs :1 an angie of 53' to the han'znntsl. Neglect air resistance and assume the greund is level. a} 1iii'iseri dues :11: football rem re the ground? {11 points} in) How far flees the football 12nd from where i: sinned? {1’ points) BL Mil 2 PM Page 5 of 5 35-113 Rec. Insu'uemr BE. heemfieee A and E travelling in epeesite direeh'nns on a straight 1nd: apptnaeh each other. threspeettuthceafih? - Slmfhandtr - 6.5.55:th .IanndEaze mufllyTDhnagm-t, how many methane: elapse germ-e they eeflifie. (S puma) "3‘ —Ie V A v5 _ x *— E . 5! Bi. A rive-.- flmfiue east at 1.5 tuft relative to the share. ‘A boat. which 11:5 a velocity relative to the water =- :3 tuft due north, cruise: the fiver. {E puma} - —_._.————l_'—'—- 3 curt-yd- db 3 D m. —-—5 évs “I L-b x 1) Find the magfimde and direcfihn of the velhdty pf the heat relative t4: the shore. Draw a vector magenta of the relevant veledfiee. {11 peters} b) The river is BI] at wide. How long does it take the'heat ta cross the river and how far due: the heat drift downstream. dating this fine? (3 pants) 014 ...
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