99.36: What happens to the inertia of an object when its y wf:gh3, mz;bby: :tivelocity is doubled?

  02.14: An intrinsic propersvi 8*a0wv ve oa;w)gf8-i.mtty of matter is one that does not depend on the quantity of matter present. Which of the followaim aeif*w8;8 .0s)t vvow -vging properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on i;i7kd,a( zlx the surface of the Earth. Assume the Earth has maii, x lak;(d7zss $5.98 \times 10^{24} \; kg$ 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 7ckkrh3k*+v0. v qwmbd ebr- 6free fall near the surface of the Earth. What is the ma k v3req.krc*mbb wv6-7k0hd+gnitude of 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 velocity to increase wh r:h7 9q;(e0,l + woadhzxer8i9bhngh ile its acceleration decreases?oheh; rb7ai+,nerx90 w8gl:dhzh9 (q

  00.11: A certain part(nkzio o pa,+eg0 tkb0.n5a7xicle undergoes erratic motion. At every point in its motion, the.ooaanei k(7 xnkpg ,5ztb0 0+ direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air ay(2q 1mcngfrub:0o 5at 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 force0:u5(2 ry abncoqm g1f of the string on the block?

  07.18: In which one of the following situations is the net force consta:(ts zf79u rahq5.u skntly zero on the obuha.( t 75fqr9: zusksject?

  13.28: An object is ivb)g/ r4on;z dhh; fz;u woe+;pjlu,,n free fall close to the ground. A person 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 the object’s acceleration is a and the magnitude of the acceleration from gravwzo),4; lh zr/v p;jofedg uu, n;;b+hity is g.

  98.03: An object in equilibriumlbzbt- l 0vf03 has three forces, F1 of 30 N, F2 of 50 N, and F3 btvb 3-00zfll of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can (hss83akil :i be combine to form a resultant with a magniil 8:akshs i(3tude of which of the following

  10.06: Which of the following statement6hts)pz13 hz es is most closely associated with Newton’s Third Law of Motiphs 6et3z1z )hon?

  95.06: The reaction force does not cancel the action force v t 0a qt9s8joq)kq5d2because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratingmthfktox2o s,s :-q2* upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the E t2sqot,f*m- :2xhksoarth?

  15.15: A skydiver falls downward through the air with constanma 3,sftal.ze3,vz 4od9af h 7t speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the s4, hffmea.d9v33z stzoa7 l ,akydiver during the fall?

  06.08: A baseball is thrown ogg7isd1p9ktj 2 a4k ak*t7 .y8 fv)zoby a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is alwaayg.s ok aijpfok)v1 87g4dt2k* t z79ys

  11.13: A physics book sits at rest on a table. On top of the book is a jcdel,b)ga:zr8 yzs1m0) dn* dpdf)4 calculator, also at rest. Wh:jng)plaz d f)cb4,e d)z0 1y*d rsd8mich one 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 a Physics I class were in lqevo( vnim2 7/qk*m* jab conducting an experiment related to Newton's Second Law.vm2mjq *(e vqno /k*i7 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 dqw,fv 9qa 6el73 3k9d7bd shfvoubled while at the same time the mass of the objectb9 vfdh7lkq,3dvq3e6a7w9fs was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acceleratedw4fa 0ry;cn)1:scmf9p+hati uniformly from rest to a speed of 20 m/s in 10sanhp:c;i4 mt 1af90)c+ yrsfw . The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling lbr+ * l fp7kt5g ic0vbz*n4b8down the road. The mass of the trailer is 4 times the mass of 0*nvb5r+4z 8p itlcg7* kblb fthe tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why l9 g4;djsx ld2varge tractor-trailer trucks generally accelera;d4 xsg 2dj9lvte much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogm 198bse1 safgram ball, f9mag1es81 sb giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface odfu(* u1s.p9 ( uz3p2te dvnjif the earth with a weight of 100 newtons is accelerated1d f *tpejnupu 9.3i(vds( uz2 at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constt-1t+: lc btp/b3rgv tant force of 2400 N. What is the speed of thtp+bg:1v3 /r -lctbtt e car 8.0 s after beginning?

  98.32: A 3.0-kg block with initppb frd.o ic+pq0;oar.un(:: ial 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 Nrq :0in(.pd cupaf+;oor pb.:. How far does the block slide before coming to rest?

  95.38: A block with init1d+qhwl gm2 9b7vr7rzial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to r rhg17b9qzm2 rdlwv7 +est. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pbulvi)ku.vk1p+p4c e 3q;rn -*)cp wlushes directl *v1luke 3.kv-bcwqppcpu 4li)n+r; ) y to the right on the 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 accelerates uniformly to rest on a lkbo5-c h2+ti(z gaf+horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic fr f-oc+52l +izgktbh(aiction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with io z 7j:fvnptwv. maz h6o18y.)ts brakes locked. It then hits dry pavement and skids to a stop in a v:o h 7za1pm6 .w.8tvy)jznf odistanced. 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 awd- ey6k.pp8s cross a patch of ice at a speed v with its brakes locked. It then hits dry pavement8 -p6k pds.ywe 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 the car sy8hx + x4cx9s0/+sqbtaggt7's brakes and skidding to a st/++908tx7h4sgasg y cbxst qxop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of 9k*n-r)jnpyf9yybgq;8by ,sthe following devices. Which of these devices can cause an acce-r jnfy9;s 8bkyq*,g)9py nybleration 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 240000j(w vlupgz;*). vm gr newtons. About how much time is needed to increase thgjw)p0(vgzr*;u vm l.e 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.7o50n)(dcqoe4j l v ro 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 accelerates to the rodrvoj(o ) 574q0clenight, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal lengt85gerb4+qqx/ ahd, z 0gbgr;zh. Assume that on all tracks the roller coaster g,r /5z8h+d;x0 4rqgbage qb zcarts 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 shows tvzh)qu);. hps x 2gv.q ;rhwx;hree roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over thepx;ghhvq.x) 2 r hv u;zsqw;.) 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 carcmlze 96u0mr 6n 46t(c9dc xudtrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at p9dr4 ctmnmucz (d9 0 x6lc66euoint

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope which md5lh1 ia spobjeym**h/t: o1/akes an angle of 300 with the horizonem:s *p/ioh1 d5*hya1lbo /jttal. 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 ub, 4r.iit/l q4kt9ukis pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 whil9u4rltiu/ti, .q k4bke 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 pusheszi , lisb9. /u.2x4twv8 clzua 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. Which of the following relatil.9tvu8z,ai sl4/2 bx z iwuc.ons 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 tnri- e dy ss/o16d1rh2he following statements concerning tds/ y-2d1eno6ir rh 1shis situation is CORRECT?

  06.15: A crate of toys remainsi r , 6az/ai:eqc0j whhk/vn:p(vz a:8 at 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 is responsible for the crate’s increase in speedu rie :0/w(zz:6ak pcaa,vj hqnh:i8/v p the hill?