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! ''15rt-) \25- Fc,t't-L 7ca4 liAt&lernn \ t #;:i1i,#ffilfrom rest from a heieht or4.e m. How long does it rake for the brick tAy 1.0 s _- D B)1.4s Y*tt,q Y*Uffi4t*EA C) 2.0s \ ' D ) 1 . 2 s # [ f f i q , f f i U q * Bjo.o. fu*?* *t '"{*tffi-b}tr \er * s t'*t 2. A system of two calles.supports u{,G"il as shown. What is the tension rn the horizontal cable? A) 1s0 N 6p zoo N C) 87N 4:ooN E) '170 N % f IjL -Frrstn C3cib Frcot{ge'1 -\ o = I E 5 N frr Fre \5() te.,n 30 =& X \':Lsl,6=z(n - 6r,f Fzy *<) 3oo r "tz? - *? e' g 11r\$*ofts)* t5-{.} FrL = 3oc: * r -1r lY Page2

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{ -l 3. A 10-kg block is p-ushed against a vertical wall by a horizontal force of 100 N i_s shown in tfr, figure. The co:fc4lla{staric fricti *, Oubetvesn the block and the ,ffir1t19g7and the coefficient ofkinetic fricrion, Fr,is *1yl .whrch oneof the folrowing starements is trul iitrre block is initially at rest? F6 'l r-t o, f,||?**^:lt":lj:^1}ry_-.+t because the coefficient of kinetic frictiontr?J 1e'tr than the coefficient of static friction. B) c) D) g The block will remain at rest because the coefficient of static friction is greater than the coefficient of kinetic friction. Tre block slides down the wail with an acceleration ofmagnitude 3.g m/s2. rhe total force exert:d on the block bt,t,,;;ir-i;t,#;ffif;Iy directed. Theblock wil sride down the war because the force "f ili; friction can be no larger than 60 N. f, 1 ,(n(t (lor*) #\$ a Gel Q=..Llo(to*) Ltocl fr = t,h fttf, r r r ' \ , f r } * F-,'tJ- = 9&-ulocl hft tOq e 3OA 4' At a location where g = 9'90 rnlqz, an objectis thrown vertically down with an initial speed of l'00 m/s. After3TdrTfr?object w'r rruu. t uu"rea, A) 125 m -" .."*"-. , -r :-.."., @ rzz.s m ? C) 245m I D ) z ; o m | { E ) 2 5 5 m I I v l ! kfh s v a ? \Jo s l, 0o *ndt se* ks V6b + *o*o Page3 k H tffi\4 *flq,m}ilru',t
t #lit the angle between the vectors A and -A when they are drawn from a common (9' 180" B) 360' c) 90o D) 00 E) 270o ffi w Uff*ffi.ry sl.rown is in levet flighr at an alritude 51)o rn \ " ' A) 150 m B) 295 m 0)qn^ D) 2550 m E) 15,000 m l5p*h" _Ltl\$nn

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