99.36: What happens to the inertia of an object when its velocity is doucth:-ub c+k :+apvm z8bled?

  02.14: An intrinsic property ofius4nl8tax5fyp; m10 matter is one that does not depend on the quantity of matter present. Which of the followingulpf a5siy ;tm8410xn properties is NOT an intrinsic property?

  04.16: A 20 kg boulds ol-06;seouver rests on the surface of the Earth. Assume the Earth has mavusol- o60e;sss $5.98 \times 10^{24} \; kg$ 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 the surface of the 31 pc360blgt d w+)is9nnyhgoEarth. What is the magnitude of the gravitational force acting on the earth by tpn 6b)hl3o twc91 sny0igg3+dhe sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velovg s (y- /uuhog ndp0t3z;ua-8o1qy9tcity to increase while its acceleration decreases?n go3 / hv0at8u9udo-u1s-(;zqytpgy

  00.11: A certain particle undergoes erratic m7cvuyxzjr9 v2x*g,5 c otion. At every point in its motion, the direction of the pa5yux* crz2vg,9j v7xcrticle’s momentum is ALWAYS

  17.14: A block is suspe8 i3(lp ees5/fix/ jwonded in the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. lo8i f3psxew/j5ie /( 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 situadma;j* r x8w;8+g6 nxkwlcer5 tions is the net force constantly zero on thww*lnd8r axe k+cr5mjg;6 x8;e object?

  13.28: An object is in free fall close to the ground. A person intervenes and h r /uj;upho8di u671nslows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the ob6puiju r; hu 87/1ndohject 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 threyvs2q6h s2e)de forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the rehsse6) d q2y2vsultant ofF1 and F2 is

  01.07: A force of 6 Newtons and z*;1 5tn,z5muf9tgsldof)qu 8 cg,x pa force of 10 newtons can be combine to form a resultant with a magnitude x55d,o;gzn p mtu)f *cgl,9z 1usq8tf of which of the following

  10.06: Which of the following statements is most closely associfm mh r1okleykrbg dl +618:/1ated with Newton’s Thir / :1m+e1yorf g8b1lmkrk6hdl d Law of Motion?

  95.06: The reaction force does+l:aiat gq( g* not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accele0ffm-jix(hyr uw(0l 8rating upward. Which one of the following choices best represents the Newton’s Third Law pair forcel-fyw8jmh((0 fu0 rxi to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air w +r,4w l0sxamqhqi, k2ith constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fxrlaik240w +mqq,h,s all?

  06.08: A baseball is thrup n,g3o-x,mndf; xflx/ 7 ,8aok (chiown by 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 x8,xio,, auc;po n7f (d-mf3hxn/gkl is always

  11.13: A physics book sits at rest on a table. On top of the book is zvh4 /vm0jimy wx*(b1m *woh f)r- 6yoa calculator, also at res*hzvh obfyj 6yi x1*)4m w/(movw-m 0rt. Which 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 Phystct )i;, twzoxi :20+zhbdiejq97v )mics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the rig,:)otb+ mxethqwi2ci;z7 9)v ijdtz 0ht. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while /u3 k9l3ztdxyzs+hr* at the same time the mas/3hz ldkyxzr+ 9*st3us of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a s5pt7 qp9c:dtcpeed of 20 m/s in 10s. The magnitudettccq pd:p7 95 of the net force accelerating the car is:

  99.05: A tractor-traim+3p7k ow8fal ler truck is traveling down the road. The mass of the trailer is 4 timeskp+ l8of7ma3w the mass of the 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 large tra)o cncu,1bjsqf6,0tmctor-trailer trucks generallcu1t ,m c0f,oq)bs6njy accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at c1; q:j-3iczwm hm 2xdrest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whichcmhd2ic:mj zw;- 1q3x statement describes the subsequent motion?

  00.13: An object near t rqu :(9.h9;tqci zydshe surface of the earth with a weight of 100 newtons is accelerated ad;ziqqrh 9c9s t.y(:ut $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constjg:8goh tp17 wmm7 k:dnk6rq2 ant force of 2400 N. What 7r28 jt7nok 6dghq1 mmg:wkp: 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 rough ho5 -.toj9 dhyzrrizontal floor before coming to rest. The frictional force acting on the block ido5.y9zr -htj s 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 afp2bk(2bh so 0cross a rough horizontal floor before coming to restf0(h op2s2bbk . The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whil u q:*sxzqa(2te a person pushes s* xqtq2a( :zudirectly 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 /gigm sftvbg b0z 7- nxj7n h:s03h)9bon a horizontal surface. The block travels a distanc h -b nmt0/s9:sib7z xg gnj37v0hgb)fe 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 slidp )qx 3syi/fz3es 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 distanced. The coefficient of kinetic friction /qyf3xpzsi3) 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 myh +iyfkq,9r( rrr.m * slides across a patch of ice at a speed v with its brakes l .mhr, r(y q9kiry*+frocked. 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 an emergenp to;e3f+qhvj rn q).ntg (ni/er/90)3ghzwacy stop by slamming on the car's brakes and skidding to a stop. How far would the car have ski njng+0r(qitho/he)tv/ gf;r wnp9 ) z.33qeadded if it had been traveling twice as fast?

  99.39: The driver of ufq5msq6f*mxq5 :sx+an automobile must carefully control each of the following devices. Wh*msxf5x +5qu:mf qsq6 ich of these devices 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 weigbx5 sb5q: n)r0 (jxcyfht of 15000 newtons is 24000 newtons. About how much time is needed to increan0f:rb(b 5q5c xx)yjsse 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 68ii11d ;,sy.og8jop n a:hifhtjt1 nhorizontal floor. 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. G:a8;1 , ho fj.8hd1oi6 nspy1jt niigtiven 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 below shows akazps8u5fg2g:63c z three 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 sa6c8u: gzp f z35ak2gover 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 show:z3xcdx v5hqta/g 4ow 0 g0a5qs three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at :03qwztqg5vd/5 hocxa xa04g 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 friction 4/gvb *sg4qkblessly along the curved track fromv*gbk/b4 4q gs 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 dragg wmhs+ p)sd 5tb; 0: e:hrgg4hic6*arned across the floor by a rope which makes an angle of 300 be :04*sp;md5r 6g+whha) s ri:n tgch 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 at rest i)t cf-ryfu 8ysmk7t)*s pushed against a wall by a 100 N force asftms)rtu c y8*f-yk)7 shown. 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 horizod 4:b.z* ks6wp uwzf9wntal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but n z 6wzpu*kbs.w9:d4w fot 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 again(ff .rygs 8n8ost a crate on a table. Neither is moving. Which of the following statements concerning (8sf8fny rg. othis situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleighvspo2ppvv *5w 4l*cgac*v*kas 41i bx- * py5h is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the cratlc ov45 4vaxb wv* vh2g*s*c*papkp ys-1* 5ipe’s increase in speedup the hill?