99.36: What happens to //08zzka jovm) i3v*giaum6ithe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one tha(zdvfu, n6nf,.7/k rbmr;o cwt does not depend on the quantity of matter present. Which of the followir/7ukcozfb d v;n6n,f.rm(, wng properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on th6vqru z*q) t+z v o)p, j8zf7b;tl,p9ixda8uze surface of the Earth. Assume the Earth has ma8) ljvvdzbxi u q;ozu),p 6a*z87,+tz9tqpfrss $5.98 \times 10^{24} \; kg$ 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 z 437ud+) v qlek;oby: gvgylz4ay46t free fall near the surface of the Earth. What is the magnitude of the gravitational fzyq +4yozb4et6)ygvlu4 dv akgl:;37orce 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 whi//+ ;m u1wv n ) eyvqotcd4x9tym;o3cile its acceleration decreasemw uy/c +tixctov1;d) emo 49;/v3 nqys?

  00.11: A certain particle undergoes erratic motion. At every pov/uace l+d v rn0f/otb501qv)int in its motion, the direq )v/0/t d+5no0b fu ev1lcarvction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the 5e yyk7b/, afsz;rkb v(,h 0xtend 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 correctv ,zareyxbhbtk;(y,s0 k 57/f ly 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 isutr/tyn3.5 bj rku/l ) the net force constantly zero b.yt)l5/u tkrnjru 3/on the object?

  13.28: An object is in free fall close to the grox: g*)mjvtb,qc sq5 ,rund. A person intervenes and slows the object uniformly to rest. Which one of the following smjcsr g v:q qx,*),tb5tatements 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, f6wgn92v c7o j(o2l t.b +pvguF1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Thecjvf69.v+lo ng2oub pg 2 7w(t magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons ci2turhf(ewqgn7g6 i zc7t32 7 an be combine to form a resultant with a magnitude of which of the follo73(722u qfrengtg 7zc it6 wihwing

  10.06: Which of the following statements is most closely associated with Newton’yefo .n0*9,u ,eqwtto8z q*qys Third Law o ot,q8y.fetzou qwyen,*q0* 9f Motion?

  95.06: The reaction force does not canh gyz5bj6a5j.cel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is4ldd( tj 1rxa*dn4on. accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravit4.*nt loadn4( dxd jr1ational force acting on the box by the Earth?

  15.15: A skydiver falls dow gig2v8 twt/pmhi1 k 8;p3o4k1whbi9pnward through the air with constant speed. Which one of the following cho i81 mtp/wt1hg3iv hbpwg 9; poikk482ices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batte a2cng 2n pbr-m(e/f/q1nbg + i;yt,ehrswings and hits the ball. The magnitude of the force th/ca +,-t2qpn ;n 2f i/egyemr1bbhng(at the ball exerts on the bat is always

  11.13: A physics book sits at rest on a cm/cc2kwh+r: f yoe9ow:/ d5p table. On top of the book is 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 bookk/rw hcw f/:po2+9cmdcyoe :5?

  05.06: The students in a Physics I class were in lad0f vi :( gbye;(ylhxgo w148pb conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. Fiegyp4ywv8 f(1g l;ho (d:x0brom this graph, what conclusions can the students make?

  99.03: If the net force on an objecwr,zf3h(jrk6bn 5ae:v -.f zi t were doubled while at the same time the mass of the object was halved,then 5rv : 3 hjw-izrkznfba.ef,(6 the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accel6 iv384zyrmv4t7d ij 7hw8)x vtakkd.erated uniformly from rest to a speed of 20 m/s inzvirxa h 4dt3w7d 8k4vy 87)jkv.tm6i 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling downy: s 5im0joy0d the road. The mass of the trailer is 4 times the mass of the tractor. If the tracts:i50 ojyydm 0or accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explaft; .znpdx+htb5 73- qe 0ajayins why large tractor-trailer trucks z- ;eqyf n a7.+xhdt0p3abt5j generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram,, ovjyqnq sxop;)wd 95 u2q..)b pjtz skater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which sn,qoqvb9zpjx,;.qjduo) 2t 5 psw) y.tatement describes the subsequent motion?

  00.13: An object near the surface of the ear+n jl:0q zqp405rbaiv th with a weight of 100 newtons is accelerated 5+iz4 anvbp0 jql:q r0at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated n z/4uie(qf/ fmh)fv,7do: l dfrom rest by a constant force of4:uf d )dlf(//mfnih,7vez oq 2400 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 slides across a roz7jhs n7kj4 i*) 0zsciugh horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block 4zn 07s)ijhcs *jzi k7slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slid2oxh3ld- vh +xes 8.0 m across a rough horizontal hl-3h2 d+oxxvfloor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whivm5:/w3il8 + hcl mzsgle a person pushes directly to the right hvc/llgw8i5m: z s3m+ 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 9vnlnv)3b1m;c / aaneto rest on a horizon9an c;m/n1)an bv3vletal 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 friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a spec)8)v kths8 lzed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic fricl)cvz 8 sk8th)tion 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 abmq p4mva7q,5ui;1xq t a speed v with its brakesq,vuiap7qq 1b54x; mm 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 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 ayjz61sf+fue8qk ob bq9 d; axr.65a1:i) fb lan emergency stop by slamming on the car's brakes and skidding to a st bal6 b.rdqjs)a 6a;fi1+f91 ze5y ofkxb:qu8 op. 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 the o icew u)x;nze:)1z9c following devices. Which of these devices can cause an acceleration in a moving car? ;1i9xeze ) )zu:cownc
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rock.:gad0f qi e.zifr+1v n88b kjet with a weight of 15000 newtons is 24000 newtons. Aboutd8e b f.gikr zqjf08va n1.:+i how much time 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. A persone+o ,z cxi xhy/xea fh(q/xoq/7 +43cw 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 afho4hzxei,+/cx/o3(eqa7 /cq wxx + yccelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coah.0fjg qcl0i1 gzkw1f5fmd3. ster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elev0 jcl3 0ffk1qg.dgz fih5.wm 1ation 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 et qj15) r5prszqual length. Assume that on all tracks the roller coaster carts start from rest at the same elevatiotr)zjpr515s q n 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 frictionlesslywoev*x.(xq d 9vrk i/( along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accelerationi q 9e.vo(/krdwxv*x( at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a (swg) :rtf faf)d6 :;agd0qyzrope 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 movew)f6f :d(s dgqr t0f);zy:aga 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 avp-- ubze2t cy7(ojk, 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while uyj e( -2,boktzp v7c-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 horizonttl+n)j xwv o3 ld/ecb z2.fm7:al patch of grass with a constant speed by applying a force P. The arrowsfovmd xe2bl7tw. l/3cjn:+ )z in the diagram 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. Nei jmw 8d7mc4g44qz8r9lw b6a bfther is moving. Which of the following statements concerning this situbfwg8 l46qw mbjmrca 44z8d79 ation is CORRECT?

  06.15: A crate of toys remains at rest on a sle vzpzn c3(0ty7yjvs3:2mt0n kigh 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 increap3y2 z0tjkn0tyvvs3cznm : (7se in speedup the hill?