99.36: What happens to the inertia of an oqf9q f: j)ne*pbject when its velocity is doubled?

  02.14: An intrinsic proo d7qb,3 nmdoh*0 t;)pe7xlv rperty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an h t,dev70x m*oobl;3d7rnp)qintrinsic property?

  04.16: A 20 kg boulder res t-k8+m/ufu7po:lv/vvl3b;mvc7 eoq ts on the surface of the Earth. Assume the Earth has ma: f8 e qo-v kvblo3tmp7/vml;/+7uv ucss $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere0nih qf sj1sws9 un267 is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? Theuh29nswnqf10 sjis 67 Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s veloci; ykeh3wv 0 pj4f+5otity to increase while its acceleration decivj5t+wo03 ;fkye4hp reases?

  00.11: A certain particle undergoes erratic motion. At everyozf/(eduo)- .n)tfv .zqa q ty:1s9ex point in its motion, the direction of the particle’s momen) : af 1xdt-zqez9q stfo/)en y.ouv(.tum is ALWAYS

  17.14: A block is suspended in the air nh9l 2e y/+eo:il3jnh at the end of a string held by a person. The person pulls on the string unif9 :ohj3lihnleyne +/2ormly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following sisfk,ls+ j6iq vd()do op(bf*2 tuations is the net force constantly zero on the objb6 fods*(o jflp+2kdi,(v qs )ect?

  13.28: An object is in f5kb2w tblu) 1ylv)p ruq.r 3;pree fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the persu;)vrbu3ltr 2y )15 b.q kppwlon? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N,un7jyep6r/cg 89g)a8 anqj+x and F3 of 70 N, acting on it. e9 8)p+ aja7qnu6jx/8r ggncyThe magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons a 5d y gk2+bjqm+bvegu::77tn and a force of 10 newtons can be combine to form a reeyj tba5::+ 7nvud27gq kmbg+sultant with a magnitude of which of the following

  10.06: Which of the follr0t ;8jq w:: e8c6pfq/fruss gowing statements is most closely associated with Newton’s Third Law of g8q jwr:t/f:rsq 6e fpsuc;0 8Motion?

  95.06: The reaction force does not can a4 kizd4 03m/3wegfe(czd2ty cel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating ur3m(xcy ff27.csvp x2 w-t5pb pward. Which one of the following choices best represents the Newton’s Thtcf mw(2-c.pv3 r7sxby2x 5 pfird Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through thenzc .g;hlsfnj9.2g k rss7;z* air with constant speed. Which one of the following choicesc;.n 7g2nksgsh*s;.9 z zrl jf correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The battervq 1aduaahwz. ,7gp3ih84l 8uy s0xm-swings and hits the ball. The magnitude of the force that the ball exerts on the bat aa u.x,i -4lhwdm1u03v8 7 gay8szhpqis always

  11.13: A physics book sits at rest on a table. On,dq af0z 6 f((im5syzm top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerasm( iz5 qy,ff (60zdmts on the book?

  05.06: The students in a Physics I class were in lab conducting an expe8 (hoka8c; dabriment relate8 h d;a(kabc8od to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force oneh hnm4 9/d)q2zvj8szoc x8r))m8y j+ v aw-lm an object were doubled while at the same time the mass of the object was halved,then the acceleration of the object i)h))8 xyc2azn/ jsl r9h- jd mo+qvmew8m84vzs

  96.15: A car whose mass is 15*nltz8 yj:)wr00 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acc: 8jwrzt) *nylelerating the car is:

  99.05: A tractor-trailer truck is traveling down the rydj xmtl;2coa k 6(((ooad. The mass of the trailer is 4 x(2yd ;(jocomkt6 (latimes the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why largxe.9(np af7 j/px7dh we tractor-trailer trucks generally accelerate much more slowly xj x7w/9na(p7edh.f pthat automobiles?

  99.19: A 50 kilogram skater at rest on a friction)4aunq ./qe ,hvb jsrkb4cb,3 less rink throws a 2 kilogram ball, giving the balq ,ce/bjh,u4vsbn3qa ) k4 .brl a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surfac ; :3znevg8tg sgasln.z8 ovfen q22,2e of the earth with a weight of 100 newtons is accelerate3:g8ge oql8ssv e n;2,v nf.na2g2tzzd at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a coq b p)+vs(5b-ht yjvg9nstant force of 2400 N. What is the speed of the car 8.0 s after5bgbjh q+ ts- 9vy(p)v beginning?

  98.32: A 3.0-kg block with initial speed 4.0 mv,py-.3rmmi n b/e5 /zyfd:m6wekj6u /s slides across a rough horizontal floor before coming to rest. The bum/jep6n: ye myi.f5r3wkv6zd - ,/mfrictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial vel( 7btib ndj)aj6a:k,u ocity 4.0 m/s slides 8.0 m across a rough horizontal floor bef) a:t, kiuajbdn7(6bjore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sua5;ug/2x ,pml ::jaoifqb5rprface while a person pushes directly to the right on the box with a force of 60N. The coeffi2am, arp/q;xu:og5: pjlbi5 fcient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving ao82du+ b k4fnlolqk- -t 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the foof-ln- q28ulk+bdko4 llowing choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its b7 1 cvprie)un)1 4q .jcx8zirtrakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and th)ei1 x.r c4zn 1p ui8vcj7)tqre dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch utt x)qhz-mpn 2-u1n-of ice at a speed v with its brakes locked. -t h p2tumx nquzn1)--It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on th9l h mhr9lz95(ar7tkg oy p :pd,6,nbbe car's brakes and skidding to a stop. How far would the car have skidded if it had been travelinglhm6y,kznp b t(,: oh9plr79b a59rg d twice as fast?

  99.39: The driver of an automobile must carefully control each of the 0mq/hs(fl p kp3n 2t,mfollowing devices. Which of these devices can cause a20mt fl3phs p,mk qn(/n acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 150mj 5 d4sgx.t+p00 newtons is 24000 newtons. About how much time is need4t+x5.sdjm g ped to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a7cmx3az4ipd0 -sz l0l horizontal floor. A person called Ted exerts a force T to the z0zapcx4 lsl0- i3 dm7right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal length. d)w:a6d1 rd7nvjbgn+ Assume that on all tracks the roller coaster carts start from rest at the same elevation a1b6nd r :dagvj+) d7nwnd moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks ofx;5 9i gsc0 nl;o(pc nyjoq-n2 equal length. Assume that on all tracks the roller coaster carg nn; icnc;0(yqx9po- 5slj 2ots start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the curved track r8sch.lt5aso+n (ok * from point A to point C under the influence of gravity. What would be the direction of the cart's accelernsls+k( ot*ahco 8 5.ration at point

  02.40: A box with a mass of 50 kg is dragged across thex 9x07dxtcm jq+g 6dwha:fe.8 floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is requira8g h0 7cdwtxj+mxd69fq.ex: ed to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a iwhd)9l8f rbu5 h b 5;su: ibxun1g2*vwall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 secog;bnl18rw iud2* bb5 f9s):v hihuu x5nd?

  05.10: A homeowner pushes a lawn md1. 7rzz k*bikower across a horizontal patch of grass with a cozkb i1d*zkr7. nstant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither xkz bj r-92u49 ojw1sais moving. Which of the following statements concerning this situati9 a9ujrbs4xwok- 2z1 jon is CORRECT?

  06.15: A crate of toys remains at rest on a sleif6l2ifo(tw,f+;t fj pgh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is resp fj +6,loftw(2;p ftfionsible for the crate’s increase in speedup the hill?