99.36: What happens to the inertia of anc(jh/o1b ,2wau 6dir g object when its velocity is doubled?

  02.14: An intrinsic property of ma*/snf9btsq )- vof ma6tter is one that does not depend on the quantity of matter present. Which of the following pr)sm9*fsvq/-6tb afno operties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of thk4 kn:92x8fh6p ( i+,xlcbi:dtiiacne Earth. Assume the Earth has mass kdxpbc2xi4 ii6n +:k89canfilh ,( :t$5.98 \times 10^{24} \; kg$ 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 fa /7ylfs 3 po4gy+xa5axll near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? osgx4ya/+p x a5l3f7 yThe Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while)/ mzzd62ew ib its acceleration decreases?w2mezi/bd 6z )

  00.11: A certain particleqz f4h/-y4soq a y4;pe undergoes erratic motion. At every point in its motion, thz;qyq-sheypa/ f 44o4 e direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air 0hpahij:b -s)tmw;m t-kd,- eat the end of a string held by a person. The person pulls on t0 dmi)-bpmaes th;j:,t- wh -khe 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 block?

  07.18: In which one of the following situations is th;os-7 nx 8vwzc3ccyd2zlz4 r1e net force constantly zero on theyz7ro1; nz4 c d2lcsc 3vxw-z8 object?

  13.28: An object is in free fall close to the ground. A person intervenes f0b, dlh ppi551/ cl del,w4r av)ba*hand 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 person?c1rllb4pvwb )l,a /0eap, 5dhh5 id*f 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 three8f3y6uqoe48kew c ,fo forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N4ofyf e, oc3euk6qw 88, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a fin(91;+v8: rtp zyk riko/lyy orce of 10 newtons can be combine to form a resultant with a magnitude of (p;i9ol8t 1rz iv/+ :nkyryykwhich of the following

  10.06: Which of the following statements is most closely associated with Newtoqsa: y/*oh)w an’s Third La *w ho:sqy)a/aw of Motion?

  95.06: The reaction force does not cancel the actiza77- ld jejp6vv)/a j;yifg )on force because:

  14.14: A box rests on the floor of an elel,3 9wz */,lgaj7-uyqeqoe da vator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the jod3a-qlq y/we,*ea7,l gz9 u gravitational force acting on the box by the Earth?

  15.15: A skydiver falls p8jcg 6qq,c(ydownward through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resiscq6(jy cp8g, qtance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a gtf bne*wh9boaq;,* 4pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on thea9* nf*h wot4b ;e,qbg bat is always

  11.13: A physics book sits at rest on a table. On top of the +i zi-(hd a.zdhv7(hybook is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to iyd.vz+hh(7a -hzd (i the force that the table exerts on the book?

  05.06: The students in a Physics 4lscd 07rv6bshs ,q5 (wc:geoI class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusiov : 5osehd ,47(0cqgcs6s lbrwns can the students make?

  99.03: If the net force on an object were doubled while at the same time tk76kidy ag 5h8xkwq)x2) op/y he mass of the object was halved,then theg/)hpxqik72 kk5y y a d8)o6wx acceleration of the object is

  96.15: A car whose ma490x /ab ptd s9icm def/i96nvss is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acc9ndd t/9px40ea msc 9 6vbii/felerating the car is:

  99.05: A tractor-tra0 *7tup ahxi f vknd76*gwto9w0d1r9eiler truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trh x1wintau6tp 70ord99w7d** fk g e0vailer applies on the tractor is

  99.16: Which of the following principles best explains why largea 2:zobj ux. k;ciu5:r tractor-trailer trucks generally accelerate much more sloco:x jk;b .uz:ri 5u2awly that automobiles?

  99.19: A 50 kilogram sk+ gj nfd ;8z msc5k0b)-f4tm,k,w lyalater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whilf,850s)+mmdwy c,j -takn ;z4 kflbgch statement describes the subsequent motion?

  00.13: An object near the su8f 7w1;edsgnf 7 kfui4rface of the earth with a weight of 100 newtons is accelerated atg47e8k7f 1sdiwnfu; f $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a v/t:9zebmo- p constant force of 2400 N. What is the speed of the btopez v/:-m9car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a r:wz1jq (9z dhnough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. Ho9d :wzqz1(hnjw far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides lm j1a(6jo ie4wud72ormh* j68.0 m across a rough horizontal floor before coming to rest. The coefficient of friction m(6m o1j2jl w6uai7djhre o 4*is:

  09.21: A 20.0 kg box remains at rest on a horizontal suyj6hc2y :b x)hrface while a person pushes directly to the right on t2jh:6y y)xhc bhe box with a force of 60N. 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 accelerat.txw2ud6 4kb gj7 g3ptes uniformly to rest on a horizontal surface. The block travelj6 wb.3ggx ktput4 2d7s a distance 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 5jxut9: rdodxct/b -c u4wyhpu 0a5. )patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction-t 4urd09hc)a/u xwp x.:otubd5jcy5 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 en6)sn8dhwxf 5 hw +:hs1l5 rdpatch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between thw) hnd+x6h55s d lr:fshwn18ee 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 makx8)h ,5fqd+9pzlg:b sj ,zx wtes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded is +qhxz9)l dt wx5,z8pfb,g:jf it had been traveling twice as fast?

  99.39: The driver of an w)31*(pmxyjw /nl jb*:g fvmcautomobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a movingcgb1 *jfnj(ym3x) /vww*plm : 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 15000 4o6h67mvasj j newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to aoj m6v7s4hj636 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor.n c/m, c 17ai,vj.ywhf A 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 ahn,wmv7fy1 ac . i,cj/ccelerates 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. (/ ptr+9n*fcm6vq 8ejf t 8e kw8jr(3tpukip:Assume that on all tracks tf+t jk8 k3/f8 trmjpi68r p(t (9*w u:vceeqpnhe roller coaster carts 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 be traveling the fastest at the finish?

  02.28: The diagram below g x1m)se5m*;yozyf(ashows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at mo;zysa 5ey)(g fx1m* 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 curuhz5nsqgqc ++ ,ap a,,4 ju2lhved track from point A to point C unh q+a5+as nqcj,hg2 u,zup, l4der the influence 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 draggeb 49axq,0jn yp8* e dhbie4o3jd 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 and the fl0 8yq4*j dh b3xnbi94 e,aepjooor 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 il h,blx. r4 iscdo2 .jc3u r:ti8.0ouqs pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient sqh x8ojuui2bl 4i, cl:d co0t.rr .3.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 pik 6j,b o kkxty74htm(9 m8s2iushes a lawn mower across a horizontal patch of grass with a constant 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. Wtkto2xs k48hb 7mm(k,6jiiy9hich of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans againsp*wfb/ qnpeqza 3; *r8t a crate on a table. Neither is moving. Which of the following statb* z r/8a eqp3f;p*nqwements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled uphj l7*( ttk9jijy0/gk a hill with an increas 0jih /ltk(9t*ygj7kjing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?