99.36: What happens to the inerti.1a3cn(b str sa of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend dp +t(7* mcnhzfg 9uozpu+7i1on the quantity of matter present. Which of the following prodiumznop( ++fc79ugz 7p*t1 hperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on t2e /9dz;0fi* roc tpp beisa0:he surface of the Earth. Assume the Earth has mas/aedzf tros: *2 pi becp09i0;s $5.98 \times 10^{24} \; kg$ 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 ;/4.ezu6t/rpq0zx yss fi t v,free fall near the surface of the Earth. What is the magnitude ossu/ ytp/z4fi0;.,zx q6tr ve f the gravitational 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 vn b1q2qe; (dhd6vx/l relocity to increase while its acceleration decreasesqxlv(r he;d q61/ndb2?

  00.11: A certain particle undergoes erratic motion. At every point in its mott:g q j0hkwr-1 pszu17ion, th r0s: kp- w71hz1jtgque direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string heldp;q 7mpk4nr,u by a person. The person pulls on the string uniformly accelerating the block upward r,p;m qknu74p 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 is1tuwosqic0 f9q5pg+/b31x a k the net force constantly zero on the o1 wtkq1 p0 3 aifc/5+o9xgqbusbject?

  13.28: An object is in free fall close to the groun2k7q z vssn9.kg;/tscd. A person intervenes and slows the object uniformly to rest. Which one of the following statements musts9nqszgk ck7v2s;.t/ 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, F2 of 50 N, 5pmip23wtc3k1k/p( m tc k4euand F3 of 70 N, actmkmw ep2(1/ppu ct35ck43i tk ing on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons anc:sj; n9a0 uzcd a force of 10 newtons can be combine to form a resultncscz u:j 9a0;ant with a magnitude of which of the following

  10.06: Which of the following statements is-8by)r38 2 ibgz ebvpg most closely associated with Newton’s Third Law of Moti8pbbgri- ge y83v b)z2on?

  95.06: The reaction force does 9 auop8fi:nm9b n81v xnot cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is fk oep-g8i 2 p3p,zv,maccelerating upward. Which one of the following choices best represents the Newton’s Third Law piomkv2pe 8f gp,p -,3zair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through themc75kb:azp ap3xu5 ov*g3tu : air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force3*kp5g:up vt 5 cx zm:b7oua3a to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed p0p.k7r7j kilof 35 m/s. The batterswings and hits the ball. The magni0.7kjrl7kp i ptude of the force that the ball exerts on the bat is always

  11.13: A physics book sits9 o(+ lfl*l +uuk5ettz dnv xvb*s;l9/ at rest on a table. On top of the book is a calculator, also at rest. Which d x*l ku lv*5e9b9vnt/+ ut+sl l;fo(zone of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in k5 x9syv1fb(va Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. Fr 5bxvysv 9kf(1om this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the sambop,:m5.clo *mb-etx fi 6 .kxz2z:hje time the mass of the object was halved,then the acceleration of the .:6mzbx 5 he,clo:*2jztpof.- ibm kx object is

  96.15: A car whose mass is 1500 kg is acc):x r00by qxjt1ai m2gelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating2aiqj 0 m:)x0b1yrgtx the car is:

  99.05: A tractor-trailer truck is traval* +e-d4r km+o d,s8xnv k1ozeling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates for-v+o se z1x +r4m *dkn8doa,klward, the force that the trailer applies on the tractor is

  99.16: Which of the fo;y)iw)m5 at ;iuf:fpillowing principles best explains why large tractor-trailer trm5 t)yafi u;ip:;i)wf ucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogramz ,z 9mo13xfmk skater at rest on a frictionless rink throws a 2 kilogram ball, giving the f3mk,zzxm9 o1 ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of thew x 5i,96d/9frled)ao fdsl. q earth with a weight of 100 newtons is ao l ,s5d6xawq 9dl/di.9fr)feccelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated c+ vcu8fdo/n; ob +y2mfrom rest by a constant force of 24+no/oc; dbfc2y m u8v+00 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s ss9 ee(e b -xr,x3cw1sblides across a rough horizontals-e,e39rwe1x xc(b s b floor before coming to rest. The 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/s slides 8.0 m across a rough gmkj2:s *3anm(3 f erylw2e2y horizontal floor before ce 2erky3: (yw j*3fs2 anmg2lmoming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains a;3k syy.qg 3cmt rest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fr;c kyym3gsq .3iction 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 mov)5 hpuw e-/xvu q/cgi2ing 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 the52x-pwuheu q)ci/ gv / 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 of dvvf p2qd ;/: 6j-x4b lr pw6ftsvbt;6qhc..oice at a speed v with its brakes locked. Itvs.6po4xdfp: ft.6d q/bw-j; ;q62 bh vlvrtc 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patfo: ;t1kg gx(8 cy3hitch of ice at a speed v with its brakes locked. It then hits dry pacg8(ot1 f;: t hxiky3gvement 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 slir 0cs ))-x6zdpbgu b i(c(9udamming on the car's brakes and skidding to a stop. How far would the car have sk uddcs zii6c9b)gpr-0 x(u) (bidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully c (ua9d6lcozatcg 6p82ontrol each of the following devices. Which of these devi9oa za(l 8cgu 62tpcd6ces 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 rocket with a weight of 15000 newtons is 24000 new-krupr( e7 n1etons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near t7k rrp1 -ee(unhe surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal flopfc adzm1d b94x6dd77or. 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 accelera1x 9bd7dcp6zam 7f4ddtes 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.h9 o8itckaze2350t on Assume that on all tracks the roller coaster carts stae0aoot inz 83kt59 2hcrt 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 shows three roller coaster tracks of equal length. Ass,-vc0ztx (o ottt20 g;tcq5rsume that on all tracks the roller coaster carv (ott5r g 2t,qxtsc-0c;tzo0ts 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 alos*lqsw,x/ +a 1xbln- gng the curved track fr,1/ alg-bn*wx+ xqlssom point A to point C under 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 dragged across h7ma6o/zzs/(n z,gt. cng mx)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 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 theza/ t6(zmg.mcnxo )7sgn,/ zh diagram?

  04.40: A 6.0 kg block initially at rest is pushedw4:r3ymsl6rq against a wall by a 100 N force as shownl4:6wrsry q 3m. 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 second?

  05.10: A homeowner pushes a lawn mower across a horizon 4ow l(*dsv vu;v(hx;,i 5diextal 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. Which of the fo,iv(xv;i(;o se5 *dxlud whv4llowing relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of thddu5g,4 yka1.b bvf 9he following statements concerning this situation iyd.h,fdg14u 5vbba9k s CORRECT?

  06.15: A crate of toys remains at rest on a sleighs8, h8poq.+ducnyk +j vt /o;r as the sleigh is 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 y8/k +d 8ptvs.h,; joornqu c+in speedup the hill?