99.36: What happens to the inertia of anfi*m8kgf/g8 /x :vdja object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that1 kinwuu a7/zfpdp)rr9/ q 2n2 does not depend on the quantity of matter present. Which of the following properties i2pupz /r 9/ n2dnk7q 1wufri)as NOT an intrinsic property?

  04.16: A 20 kg boulder rests onu*4 snmra/e m i828qun the surface of the Earth. Assume the Earth has m8rn2u*an/ ims equm4 8ass $5.98 \times 10^{24} \; kg$ 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 sphere is in freeubwp2 o)tm/4s 2nfubd 4rq0 g9 fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphewqtd29 o4)b0gf n4sru/bp2 um re? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while i0)qfsnuiu1p c k1v.+sts acceleratio1fc su0i).nqvusk1+ pn decreases?

  00.11: A certain particle undergoes erratic motion. At every po 1ck4vs/o0nleint in its motion, the direction of the particle’s mom 4kn0sc levo/1entum is ALWAYS

  17.14: A block is suspended in thy417 f ga *exwx:y8kgde air at the end of a string held by a person. The person pulls on the string uniformly 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 b y8gdaxgy*7e1kw4:f xlock?

  07.18: In which one of the following situations is the+agcw+ 5mk9;zn bpeo 4 net force constantly zero onzape gm4w+k5on 9c;b+ the object?

  13.28: An object is in free fall close to the (g zanpr/ ou96ground. A person intervenes and slows the object uniformly to rest.9zp 6n ra/o(ug 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 person? 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 thh/dpk+/anah bnu- ( a*pe)/ vbree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1h (/k* an /p/)pvubn-+ dabhea and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form6i im) sc2a2d:hov0 vm a resultant with a magnitude of whic 2620:i h vmas)omdivch of the following

  10.06: Which of the following statements is mo332k:cwmnab: su 7b 4m vi5wfvst closely associated with Newton’s Third Law of Motion?fa5w: vk3 s:cv m7 3mibw2unb4

  95.06: The reaction force does not cancel the action force becaus-8yt ;gxmm2h yd) 8nnce:

  14.14: A box rests on the floor of an elevator. The elevator is accelerat.aks4 vgvl*5e*z6j laing upward. Which one of the fol6v.* g5l keaj4z*lvsalowing choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downwary z94hblyq(xc0oys,6 d through the air with constant speed. Which one of the folloc 6,ys0 (9yz 4hxlybqowing choices 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 thrzb)ean.c ce .* +rlcs;own by a pitcher with a speed of 35 m/s. The batterswings and hits tnblc.. )cazr+*s ce;ehe ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculatq1au; +kho+leor, also at rest. Which one of the following choices is the Newton’s Third Law pairauo+k +he1 ;ql force to the force that the table exerts on the book?

  05.06: The students in a Physics I classy.flnb wr1w;dz)ky-e;/ z5 wn were in lab conducting an experiment related to Newton's Second Law. The collected data were dispn-nekr;l5wy1)bdw ;w z/ y .zflayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force oi6 wp+oj abu-ds0 9kx-n an object were doubled while at the same time the mass of the object was halved,thes+a jpi-wko0 du96x b-n the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly xxa-8)echx*sfrom rest to a speed of 20 m/s in 10s. The magnitude of the nex-8a* ex)xs cht force accelerating the car is:

  99.05: A tractor-trailer truck is travelq 9pe 8-8/t-ss:hphn/fxbz )rjf j(laing down the road. The mass of the trailer is 4 times the mass of the tractor. If the jxf/9 a q- p8s8p)jferh l-h nz:/s(bttractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princ 1u3v xoo7p(pqiples best explains why large tractor-trailer t1vxq op7p3uo (rucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogramq+)by o- ,stfm;k +fkl ball, giving +)ff;ls+m-,bk t oykqthe ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the eap .(*0 bq0yl 4ytvtrdhrth with a weight of 100 newtons is accelepb4(vlqthy* 0r0.y td rated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated f a v,g3.q cw,1exnjw-6cvr -eerom rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginninxgce3vn w ,-w- cje a,rq6e1.vg?

  98.32: A 3.0-kg block with initial speed 4.0 m/s sl.30 0bnto4u sz.o2tvblbhc(uides across a rough horizontal floor before coming to rest. The frictional force acting on the block 2on ubthb0ol(. b0us z4t.v3 cis 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across xwz )43x ykbi6 -yimy3 ed0b(ha rough horizontal floor before coming to rest. The coefficient of)3ex0 (yy -3zwb4i6dibm xhky friction is:

  09.21: A 20.0 kg box remains at rest on a horizo x ji)2w.zlji.j ban43ntal surface while a person pushes directly to the right on the box with a force of 60N..xn j) .43i zbijwja2l The coefficient 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 at 8 m/s accelerab8;m: oatu6pw tes uniformly to rest on a horizontal surface. The block travels a distance wut6;apm8 bo: of 12.0 m during the slide. Which one of the following 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 of4hgcs t,3 b7op(lc)k g ice at a speed v with its brakes locked. It then ht3 sp( gc4lo, kcb7)hgits 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of j .sv/kdj+pl 0bp;f8wbx .t7gice at a speed v with its brakes locked. It then hits dry pavemenjdt;+k7.p.xjfg lbvp08s w /b t 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 m(n32h ,itif-+i n xw xgnb0j0dakes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had bee , hin +itnx-(dng0bi2f3 xj0wn traveling twice as fast?

  99.39: The driver of a,b vg/;u3g4 zf wgn*qin automobile must carefully control each of the following devices. Which of theseggnq3;z/b4ifu*v ,w g devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a :q me.8fnsi.y1 zdp n/+f.2eh:cacinrocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s tfd./p8ze.nsi: n :n.c +qc1 e fm2hiyao 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Ted * hmihwull6u3q80zz q4t)5 gbexerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is zit04zw68 bmqh35q uguh l*)lhalf 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 lengthi4,y8kab7om; /6 g/uev d bxqn. Assume that on all tracks the roller coaster carts start from rest at the samuxq7d b,y6nb/ 8;kie gvma 4/oe 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 be traveling the fastest at the finish?

  02.28: The diagram belowv7 l,bqt*c*e(sn gmtp 3zir1 6 shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from resvcpz,lqb igs3trtn( m 1 *6e*7t 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 tnvx kottz bck *u-,+3-he curved track from point A to point C under the influence of gravity. What would be the direction of the cart'snk x+ t-*v bokt3u-c,z acceleration at point

  02.40: A box with a massd s) txmhs0 *(-jsmb*9np7pxn of 50 kg is dragged across the 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 andpmnb9-hm (sx* jsdpxtns7)*0 the floor if a 250 newton force on the rope is required 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 purusx9 gd) yu)+shed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. Whaty )srg9 x+u)ud is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn lpmkrjg) c*c0z3-4c0 dntx t0 mower across a horizontal patch of grass with a constant speed by applying a forc ccgtkm)0 c-jp l0xn*rt 30z4de 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 againsgib-n9- dyg2ut a crate on a table. Neither is moving. Which of the following statements concerning ig- 2ybn9 u-gdthis situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is p/p,,4 s1 9h pgn/xpt;xesfipj ulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s incre,th,pi1s/g/je9 p;p 4 xsfpxnase in speedup the hill?