99.36: What happens to the inertia of an object when its velocithxu/h/ xi3vi(y is doubled?

  02.14: An intrinsic property of matter is one that does no 6r:vsc1xqn5fs3u9kjdb n2x. t depend on the quantity of matter present. Which of the following properu6b d3 vf j.q59:x1skncrx2snties is NOT an intrinsic property?

  04.16: A 20 kg boulder rezi y:07ice hax87abkyk) /z (jsts on the surface of the Earth. Assume the Earth has ma y/ay7ex(iiakjbc80h 7)z k :zss $5.98 \times 10^{24} \; kg$ 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 free fall near the surfacd/h a.6a8upsn e of the Earth. What is the magnitude of the gravitational sau/n. h 8dpa6force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to 3 xu lxs2wr4 oio0+e(bincrease while its acceleration decrealbw o( +xe u2i0o34sxrses?

  00.11: A certain parth*q9 7pva h abz h2124oabby5yf r(5jcicle undergoes erratic motion. At every point in its motion, the direction5bobr2 acfhb(hy4zq9j vyp7* 5 2ha1a of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the o+ ;ov-jg s08 d9k79sxip ojpqend 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 th -j+xo0s o8dqo 9ivj7 kpp9s;ge string on the block?

  07.18: In which one of the fnuc(8:jl*/qnkt tp vrx ly*:bd )p/5oollowing situations is the net force constantly zero on the objeckl* t/:nnojvu: *x5yc()8tpl bdp/qrt?

  13.28: An object is in frsc /e/ ,qknfg2ee fall close to the ground. A person intervenes and slows the object unif,/eq nfs2ckg/ormly 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 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 three forces, F1 of 30 N, jd7b z6 9k(olilp a),oF2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ka9l( 6pbzoi),odl 7j ofF1 and F2 is

  01.07: A force of 6 Newtons and zq9i 6bznq.:l a force of 10 newtons can be combine to form a resultant with a magnitude oflzq 9qbi:n6. z which of the following

  10.06: Which of the following statements is most closely associa 2e3f9apkgvp 7ttk6q) ted with Newton’s Third Law of Motiona 6 tv27gepf3kt) q9pk?

  95.06: The reaction fo-stdhrzcvdr: -vl d4-5fo )t5rce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator bk.2e9b-ln vqn5 lmn54jvg7v. The elevator is accelerating upward. Which one of the nvm4q bnev- 27nk9 5llg.jb5 vfollowing 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 downward through tt )i 1:*xzrrymhe air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver duri ym: r1)tzrxi*ng the fall?

  06.08: A baseball is thrown by jls p7m hu1;s4gs12 dgfv.m7 ia pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on t1s;gh7 u1s smi7j4v2fdp.gmlhe bat is always

  11.13: A physics book sits at rest on a table. On top of the book ii n;xkzs+2dm (s 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 exerts on the book? i mzx+sd2nk(;

  05.06: The students in a Physics I class were in lab conductinft5 8bu4o lmdd( i: +*qfbawg.g an experiment related to Newton's Second Law. The collected data were disp *4buf(o lw:8mgftd qb5adi+. layed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force oz b* +2xqw f7o48tpkbnu 60tdhn an object were doubled while at the same time the mass of the object was halved,then b7xutktonwh8zb*+ 04 qpdf 6 2the acceleration of the object is

  96.15: A car whose mass is tloyn* df3pesox, z4.v.o nzp62m.77 ahtgw; 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratinxndw ft,ly7oztna.mo*2zv36;p.po4g7 e.s hg the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trailk 3d lxa:7 lvfx.r29ab2ka*grer is 4 times the mass of thvkaa2 b.r7xl kxd3r* f9agl2:e tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following x-dmek*s6ax,a-*i + 0gnrr+lr8ll npprinciples best explains why large tractor-trailer truall*r+-namx p8r6snlrg x i+*e, dk0 -cks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogram b:79lj8j *cu pxa cdtmo ) x7xz2-tmbo8all, giving the ball a velocjdo)*2t9 lpujo zmtm 7xbc-cx a:x878ity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface im,k fqev9sd7aa8 :t;of the earth with a weight of 100 newtons is accelerated afk e,atvq8m 7ais:9d ;t $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated fg , 0t8e(acnrnrom rest by a constant force of 2400 N. What is the speed of the carte(n rg8ac, n0 8.0 s after beginning?

  98.32: A 3.0-kg bloc7z*ldhf4b ,ursuavn 3 w.0-r7axegy , k with initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How faw70az ,u shgr,vdx bu* 3ny.4e-7l frar does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slide3d uj y:ejx 36fbw(d9 unso80os 8.0 m across a rough horizontal floor before coming t306 (w une s:uyj83jfdxbd9ooo rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a )e2p*vo(: xre7 ypq oghorizontal surface while a person pushes directly to the right on the box with a force of 60N. The coeffi7 2o *gpqex v)y(peo:rcient 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 860)fmvz .y)sxckwwe j5c f,;x 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 follow )6)ey vw.; xmxk z0jcwf,cs5fing 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 brake4/ e ;on1-w x8eqo pdcah05xqus locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry roq8oh/doquxx504 pene; ac 1w-ad 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 ice at a speed v with ijx-9x gb l6yytlnnr5., fpr 9;ts brakes locked. It then hits dry pavement and skids to a sto9j,g 9n;bl-.nfrt6 ylxypx r5p 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 sla c2pd*4cbbs n blh45f3mming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fastcnbf *cbb2d344hl p5s ?

  99.39: The driver of an automobile must carefully control each ohab+ p88bn/ irf the following devices. Which of these devices can cause ba 8b i+8rp/nhan acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rockg*navn7.3x .g g dld,eet with a weight of 15000 newtons is 24000 newtons. About how much time *d 3g 7d,v.lggn.axen is needed 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 a horizontal floor. ln ei1e3pv yq7*40 r2r)p ytmwA person called Ted exerts a force T to the right 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 th72 yer)e*tqywp4ivl1n mp 0r3ree forces exerted on the box.

  02.27: The diagram below shows thrc41q rfnrg:-see roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the s nq1f4crs-g:rame 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 below shows tayaxo 5n6iv;n 22iahe(i 1lc;hree roller coaster tracks of equal length. Assume that on all tracks the roller coaster c 1;(vo6h i5nn2;ceix2iyl aa aarts 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 tu6d zm +ef:1fxhe curved track from point A to point C under the influence dz+me 6 fu1fx:of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is drag;hyz sx:*c eq 7;0nbwxged across the floor by a rope which makes an angle of 300 wisqy7 wxc;*nb0zx;:h e th 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 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 pushed against a wall by a 100 N forcvap l.90,d-i phisg*/ee gwq9e as shown. Thecoefficient of kinetic friction is 0.30 while the c/qv*ae.hglg ii,9pp09wes d -oefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass wit,6mi8l0ifj,45emo 2+ft o hhrxyvp t3h a constant speed by applying a force P. The arrows in the dxmly5t,0i3,otmevfr84o ph hj f26+ iiagram 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 again.fu 4sns,(1ga dyd0ujst a crate on a table. Neither is moving. Which of the following statements concerning this situation uda0(ndg y4fs s,.uj1 is CORRECT?

  06.15: A crate of toys remains atrh/ uxl4hc 6g4 rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force i h6x4/cl4rghu s responsible for the crate’s increase in speedup the hill?