99.36: What happens to the inertia of an object when its velocity (o -h:;g h3tpzrdo)ou is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the +f;b ,b vjojl7quantity of matter present. Which of the following properties is NOT an intrinsic b+ ;lbj 7j,vfoproperty?

  04.16: A 20 kg boulder rests on5r07+,krc )s2b0l qlnjkfnjc the surface of the Earth. Assume the Earth has m,r k)qjn20jl+ s f5cnb7c0 rklass $5.98 \times 10^{24} \; kg$ 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,l+ubgl0-z, gw (q rwgv9knb/gp6e1q of the Earth. What is the magnitude of the gravitational force actq ql0+,zwgrlgg9bg/k- np1 ub 6e vw(,ing on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible f1),h1r4.f b(s rk h9f jjgka;bp/ jtgnor an object’s velocity to increase while its acceleratio 9 gj,pkhbr41b hs.at1 (/f;j)njrfk gn decreases?

  00.11: A certain particle undergo5u cauf(a k.7zes erratic motion. At every point in its motion, the directzcfau(5au 7.kion of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string her + gt4pnms z1 n3f-zhyym74xx/s,i6k ld by a person. The pe-7ix mhs k3zxng 4r4msfy, y/t+np16zrson 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 force of the string on the block?

  07.18: In which one of the following situations is thw- wcv.4tes s0tde1swq:5- f fe net force constantly zero on0 s 4dwsqe tf-v5f sw:.t-1ewc the object?

  13.28: An object is in free fall close to the ground. A persouh;dnj9x-8j on 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 obj9j;n -d xjou8hect 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 )kpr9luup9c; :xw 1bnforces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The k:)p 1u x u;bw9rnp9lcmagnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons covg :s7q,vjyo 6jw ,-xan be combine to form a resultant with a magnitude of which of the fvo qj67gso- :j x,ywv,ollowing

  10.06: Which of the following statements is:7sz8ud0 *) qi wlhdbz most closely associated with Newton’s Third Law of0h)qzb7 di:ds *8uzwl Motion?

  95.06: The reaction force does not cancel the action force becausep 7 r4hr*s)yrak)o,/g (dzjlwt*omq+ eq a o,):

  14.14: A box rests on the floor of an elevator. Thelm0b :ff5za3iafg5 .j elevator is accelerating upward. Which one of the following choices best represents the Newfl0.iaga:3fm5b z fj5 ton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with cons5 u(mut9q,/fdbw 9w6fridx-atant speed. Which one of thbux5ta- ( f/uqd6mfwd9,r wi9 e following choices 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 -u77xdl l-ilca t78b6ikp2i hpitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of th7 6x hl7-kipil adl8ti-2ucb7e force that the ball exerts on the bat is always

  11.13: A physics book sits at ue z0 dx7eab 3-w7axe7rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pu zee07exaba3d7xw -7air force to the force that the table exerts on the book?

  05.06: The students in a Physics I clasvy0s5px:9jalec 6o+a gd 0en7 s were in lab conducting an experiment related to Newton's Second+oys:axed a j0v05g 6e9 nc7pl 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 z3quc.rn8x a2n3m+sla. ;ve x an object were doubled while at the same time the mass of the ob l8z3;.m2a3.ce a u+ snnvxrqxject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to 6qznc.bj mo21a speed of 20 mo1 6.bq jzcn2m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of 0xqr8 ofjb 88hthe trailer is 4 times the mass of the tractor. If the tractobo8xh8r08fq jr accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explaid azq :jq- iofumf6z8fxr8792ns why large tractor-trailer trucks generally acceler q89x2 f -8i6zrdzoqu 7jm:ffaate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilu9 ,g+e1 smzciwfnizk3b7g /,ogram ball, 7 nm ewgb/c 3izki, ,9usf1z+ggiving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surbz jxo5v 0vxj,j6 :b gx(p:1haface of the earth with a weight of 100 newtons is acceler :5vjb 1xj,x:j x(pabg0vh6zo ated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acu4n( s/jtliq-jz5p s (celerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s af4q5p n/s(ilj st-z(j uter beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across l0xn,j4t7 gc ga rough horizontal floor before coming to rest. The frictional foj4cn 0,l gt7xgrce 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 su9+lt t. 07gqr(* ne pxj//ajof joi2a rough horizontal floor before coming to rest. The coeffiot0s *r nqjiget/jf o j(/.+lxu2a9 7pcient of friction is:

  09.21: A 20.0 kg box remains at rest on eic1k .iv9d 9.u uqaeq92v+nd d5ii8ha horizontal surface while a person pushes dire.d5c9ha9q iuk.qi 9dd+v 1ui2v8 eeinctly 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 86nlt,ru f l-9k:2k d;jmn -ppj 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 the coefficient of kinetic friction between the surface and the b,u-p:rk l 6d;f ljpnk2tj-9nmlock?

  00.21: A car of mass m slides across a paj vuu*a9x(* m)ianw)b 0tj l7ctch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in*u7*( 9mvxcb)u)iwjnja 0l a t 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 pa 2/ew(da,dkpeft60 xr a 111hfv bcp 2hfu(;vjtch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a dist/1h 2d1fk (1uaecdvhrvb20p6xwf p(tej f ;, aanced. 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 slamminiaur94ux,2h0 itug y2 g on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fa 0r9iuyxg,u2 h taiu42st?

  99.39: The driver of an automobile must carefully control each of the v , ,ntds. fvh)150eue:hkp+twisl *tfollowing devices. e+1thv ,h50*sdttiuw)sen,fk .lv:pWhich 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 weight of 15000 newtos-g+66c dnen xrzs. 8kns is 24000 newtons. Ax k.gsn6s+z-8n6rd cebout 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 t ,0 dpv1hwhknh8tt w(1he right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a ftnvhw, ( 1p8h1d0 wkthorce 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 right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal le22m ggsqh(- hf s(btz+ngth. Assume that on all tracks the roller coaster carts start from rest at the same elevation and mov h2ss2+z (-bhqt(fggm es 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 trac b:yyxk2v 7j mwa/lgn,9q0w .uks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frvj: 7q2u/0xwl,gay.m 9ywkn bictionlessly 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 car b80kfm10rle otrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would blfe81bkor0m 0e the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged7b gn zdto0hjtwt+( 1ri- )+tp across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following wou w0+g7n)b1hr( jptiotd+-t tzld 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 zr);sk(xiv* t1 zn 15xeqoo u4is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static frictio *it(ko;z xs1ux5qzno)r 4ve 1n 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 mowerinc 8u;w7k a .pyd 4xo(u7yv7x 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 relations among the various force magnitudes, W, f, N, P ia7uy87o.n47k (w; dc xvuxipys CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Whic.a y/8k6e zd,cb a5fbgh of the following statementa/ .k ydc8ebgab,6 5fzs concerning this situation is CORRECT?

  06.15: A crate of toys 6mmaiyci (70fntr/7xremains 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 mtxciaf06(niym 7r7/speedup the hill?