99.36: What happens to the inertia of an object when its velocity is doub0b4 (l 0)/zuyuv cw22zk5qylt jft6caled?

  02.14: An intrinsic property of matter is one that430md ;6lon9,bt tx btj qwh5n does not depend on the quantity o xnd,0;5t49h6 jmbwq ttl3bo nf matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earnsk 1wp9z6k 4tth has mass nz146p9tswkk $5.98 \times 10^{24} \; kg$ 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 p2o8fga d) x4ltkg- ,zthe surface of the Earth. What is the magnitude of the graviap 2xzd -k 8)glo4gtf,tational force 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 veo qf53 c;vp k-xe5optc7/ryq9locity to increase while its acceleration o7/ etfopk95;vprq 5x-qycc 3decreases?

  00.11: A certain particle underg(xiw:qn i3pb,er89a y oes erratic motion. At every point in its motion, the direction of the xa38b( :rpn,wi ie 9qyparticle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string heldd ja:n(x 2dg0g 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 the2adj( :xn g0gd 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 tsq)pqo8n3vzypq 3f7th9o z9 s unt 8*+he net force constantly zero on hn +tqz*f9q 3u 3ytqs)oo87pvz9 8p snthe object?

  13.28: An object is in free fall close to the ground. A perentc5p 3z 3,fmson 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 person? The magnitude of tp m,ct3f3nez 5he 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, x8*/ *g- 3wm;oiwji fv13b,k hiwga ksand F3 of 70 N, acting on it. The magnitude of the resultant ofF1 andjgw3a,if s *;kibm/3 o8 i1-*kgwxhvw F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine t184(aun n*5br wsp ooao form a resultant with a magnitude of which u81 *w5non4 a sabrpo(of the following

  10.06: Which of the following statements is most closegcmzyf20 -e+ozu*r t0vt ;m b1ly associated with Newton’s Third Law of Motiong+ * b rymct2u0f-z;vz1o tem0?

  95.06: The reaction fsozd 9hcc, n.5hm8cl) orce does not cancel the action force because:

  14.14: A box rests on l qd9mm+xtkg5.z k)qa3/t)q koqz; 3bthe floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Ne az/ tk+))tkkx5d3 q;z3q9ql q.bo mmgwton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward j5zbva;h)o;b through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance act;hba)j 5;obzv ing on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher 1yq (w y5dj8va ca42bw1d4kudns l 7.mwith a speed of 35 m/s. The batterswingsaqwbad(m. d4 un y274j1 dkw18svy 5lc and hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits ate(npa6 ar6np -bgj+p - rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is rnj ne bpa-- g(+6pp6athe Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conduchhz fojfscx/ku46 9p 5r1w)*s ting an experiment related to Newton's Secon4 x6)cu*z rh59fhk/pwf1sjs od 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 on an object were doubled whic-nyzap3g bwuk 6x0qvaq y)fh/k5ct;3 p( 2:kle at the same time the mass of the object was halved,then the accelerat/uk 0 k:b2tcyp z 3 (q)hyag6w-xvf;qka5pc3 nion of the object is

  96.15: A car whose mass iso-a*xfq1z 1tv 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnt*vz a1q -xof1itude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling 7n8kzug4me yw 4*.pjowm*a0qdown the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force thmewgy 4qpw *a.7*u 4jmo k80znat the trailer applies on the tractor is

  99.16: Which of the following principles best explains why l; flt,+5vbesiarge tractor-trailer trucks generally accelerate much more sitvef sl ,b;+5lowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless ri2ph5 vygk,,k1rohi 5 fnk throws a 2 kilogram ball, giving the ball a velocity of 10.0 o1f2g,hh5 ip vky,kr5 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of tzc. *9/1le*glvc of h ujnc-e(he earth with a weight of 100 newtons is accelerated ate.lf lg(**1uho- zvnc9 cc/ ej $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 12gcms(p3bcceh5 qiuz0teu n2 o+y2 +x30nm 28 z00 kg is accelerated from rest by a constant force of 2400 N. What is the speed of 3c 2eqc+5uye8 nmg xz+3hsmi0(0nzpcub2to2the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizonz ;hz0hyqg k4 hxi,+bi/u4jl*u+f+cl tal floor before coming to rest. The if jkib,xu044z;h glhzlh q *cy /++u+frictional 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 velocity 4.0 m/ 7.o0ja/krjm*(xdg l is slides 8.0 m across a rough horizontal floor before coming to rest. The coefficien7.rdjj (xkmo 0i* /lgat of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person euct1 * ;zh51kyrjvk5pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betwe1e k1k *thy55u vzj;rcen 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 mo( wk(bc il7u8dving at 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 following choices best represents theclk (w(u7ib8d coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m y0k2x)7mirp i tr1 (v u,:ya:vmlk;frslides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a aik02 ru)i y:r fxr 7mv,ply;(:v m1ktdistanced. 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 ice at a speed v with its b3x fj/l46rz 1 qis0q(aiai ol,rakes locked. It taxi3( ij1/ 4 r0lzq6iof,aslqhen 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 tta2k m7 fbe:eeppx(b/o 0ml-/he car's brakes and sk7/ /f meao(b-ptxelbk e p0m:2idding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of al.s wd1,2*,q 6odvb-4 okixfvnjz9gx n automobile must carefully control each of the following devices. Which of these devices can cause an accelo,j. 2sb klxvwd-fqin1z6g4 x9vod ,*eration 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 wej 9qfxvcziv 6l. (1ig.ight of 15000 newtons is 24000 newtons. About how much time is needed to incregfz(i1jvcv i.l 96q.xase 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 o:7;cx mfdt up/: cy2qacross a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to thmc yc q:7u:xf/ot 2p;de 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 belo h;g0+ueq k/tc4o :rzr5 z. hhpd7b1u6u1 ptbrw shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fpu+b hec 45 zrzkrb11u;7h .d0phot6tg/:ruq rom 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 shows three roller coaster tracks of ev3: jg zvxzb8mfgshi q564/s,qual length. Assume4gzbz/: s3fxsq , 8higv5vmj6 that on all tracks the 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls fl 40qnmp(,eva q ;i6 0jbytql9rictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction ofq0bn qt0yl(p e64 j,qiv;am l9 the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across thetkq:,phgyz2rx6y:/g5) ( d 3s jgadnxk p3ur 3 floor by a rope which makes an angle oft /3npxp qh5r2ky kdd jg:x) 6rs(3,ugy: a3zg 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 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 ah yxy+7mo-1fj9, .b 7ef m3 ta9rujpocy lwm),t rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction ihpo73r 9+7t .oyjl,c m e y jwaf)xmyb1,9-mufs 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 second?

  05.10: A homeowner pushes a lawn mower across a horizontal pz9u 3 fdy.x7)wperj x+atch of grass with a constant speed by applying a force P. The arrows in the diad ewf 3xu9p7jyz). xr+gram 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. Neity;q6/ ruzagxue0kg.- 8)oy 6g f4skqg her is moving. Which of the following statements concerning this s yq/ku )8 s. ue6 gak4;xygoqzr-gf06gituation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh isbf 3bvn5nhd-m 3pd-e1rts :w / pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in sp3-/-ndf5nwmebt hrvdb1 3s: peedup the hill?