99.36: What happens to the inertia of an object when its velocity j/l,:s:g ajvcis doubled?

  02.14: An intrinsic property of matter is one that does not depel:rxif m ,gli3gl3a.;lrzz1;0*k k yrhjq96c nd on the quantity of matter present. Which of the followinl3rkz; rq l.gy k*xi3zjc91 hl;m:flar 0i,g6g properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests n8l bn, o,i4-drir:mj on the surface of the Earth. Assume the Earth has m8r4lid,ijnmo nb-: , rass $5.98 \times 10^{24} \; kg$ 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 fallqzb4 in2ko5ma u 9bsrp37 28dc near the surface of the Earth. What is the magnitude of the gravitational force acting on the9osp knq3ur5d2a7czi b4bm2 8 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 whil qx:. z v rw5a3f)yud3utbqh: s:ugw.)e its acceleration decr. 3udq.:s:)u tzrhvw)u5g w3qyxf:abeases?

  00.11: A certain particle undergoes erratic motion. At every point in iyhzkc *wc2 h+0yc+: acts motion, the direction of the particle’s moccyy 2kzh :ah*+cc0w+ mentum is ALWAYS

  17.14: A block is suspended in the air at the en+zkcpld*r1 u*..usc vd 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 force of the k.v s+pcz.u r*ucdl*1string on the block?

  07.18: In which one of the following situatil; 1i6 fwuhir0d;p9hqons is the net force constantly zero0rpf1 u;wih6 9; lhidq on the object?

  13.28: An object is in free fall close to the ground. A person intervenes and36yubm :0jm6a c5.xsn5c zzt q slows the object uniformly5xu cc: z mnsya5.bzq j66m30t 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 gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, an, uknx i,l3wx3 5-iy+ ekqn*bnd F3 of 70 N, acting on it. The magnitude of the resultant ofF1nnkue35 *xlk3x i-qwi,,+y bn and F2 is

  01.07: A force of 6 Newtons and a force o+q:cyc;g;ml- i:t4j mi :ri mmf 10 newtons can be combine to form a resul+imjc ;lm:: ;c iimq:-gmt4 rytant with a magnitude of which of the following

  10.06: Which of the following statements is mgod/ c.yjn./*: h kyqjost closely associated with Newton’s y/j :h./k.* gncdoyqjThird Law of Motion?

  95.06: The reaction forcef w)qdfrwv4x+ve;at l+9 i ,5m does not cancel the action force because:

  14.14: A box rests on the floor of an eleva4ec:d5dix,r +acz 2xztor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Thir +,ddri 4z:2 aexzxcc5d Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward throuab odhc 3e1 9x(isv)3.kjdj(wgh the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting. 3bxjohwscd(e1vj3ak)di(9 on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The,e g w 7(+p2x,/hlye eesxshs; batterswings and hits the ball. The magnitude of the force that the ball exertx2s(7,hwyss+exl ,/heg;e p es on the bat is always

  11.13: A physics book sits at rest on a table. On top r6xyk2n 92nvq of the book is a calculator, also at rest. Which one of t9r y2q 2xnkvn6he following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in6+x :3 (rmymvmh y,yhz a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the gr(ymz+3yhxv hmmy ,:6r aph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time the masv:x8hby2p :tk 9ut:mf,l:hek+r .iczs of the object wasimu9.kev +,:kbch8t lz2: xf: r:pyht halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a speedk3:fm oxwzlc7. x1 8pc of 20 m/s in 10s. The magnitk : 8.zxx7fc mo1lp3cwude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trai7 do yr/:pa v9(lkaa,mler is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on (:a/a, yd aprlmko9 7vthe tractor is

  99.16: Which of the following principles best explains why i6 rrsb,m :im*large tractor-trailer trucks generally accelerate muchi6* r mrbs:im, more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a nqcjebls(w wk**f) k k0cmx,5 tv03;b2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whichmkw l5c0q;nf(k bcw *tks*0v3),exbj statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a we4b06 *rwn opw 8ogdm0hight of 100 newtons is accelerate*m4 p0worw6h ngd08bod at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is abbs*: du ua:2xccelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginning?s2a: uxbb u*:d

  98.32: A 3.0-kg block witz-7wr v*7,n a jt6rmyuh initial 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 N. How far does the block slide befor,67jr r7amn tvy-*zu we coming to rest?

  95.38: A block with initiw5b(wr(p+,*zeeap h cal velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frictip+(5 *rcbwzpa w(eh ,eon is:

  09.21: A 20.0 kg box remains at rest on a horizontal y,sl mr+z ogu,2/4mpqsurface while a person pushes directly to the right on the box with a force of 60N. The coefficientl4som2+ gu/, yzrqp m, 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 uni0g2xoyj; xkji0v t28m formly to rest on a horizontal surface. The block travels a distance i0tvkx o gm2y;xj0j 82of 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 slikl ,mn.7 5hfhodes across a patch of ice at a speed v with its brakes locked. It then hits dry plk honf5,h.7mavement 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 sl9 *vvmja3+l kkjl:op /ides 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 frictim jovvpja9*3 +kk l/:lon 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 a5nss ap(7s o-6weqyc 0a /t.bhn emergency stop by slamming on the car's brakes and skidding to a stop. How far would tsn b-htac0ws/aq.y( p 6o 5s7ehe car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefow5e0-f6 *mz ohjfh)sully control each of the following devices. Which of these devices can cause an acceleration iem z* ffoos 5j)-6hh0wn 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 newtouh s4 mx*:z56kko cf s*crhj9e8um5j-ns is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s c*ums zjecf 9u*xr -kh k5854mj:s6honear the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal f lu71eodur5qdpi1lw o2-:/+xzeh ho2loor. 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. Giv2re-lu doz+h 12i1wo xoh dqep5:/u7l en 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 th 7ocow-l 1yv;bree roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fromo7w ;oylb1-c v 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 /+rhz p3k ay5:phjod+shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster +pa/3hdkyho+ :r z5 jpcarts 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 al88y,caf3gj orh4 s 73f3pl alca ih63hong the curved track from point A to point C under the influence of graala r 8 gj3alh 38pffy h43cso3ch67,ivity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass ok 2:8uwqna5uz f 50 kg is dragged across 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 cons8w 52:quaznk utant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against azeo rpa+aqk 8(0+ppo; wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficie;a( r ok0e8+pppzo+ qant 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 horizontal patcgh4l* mk/r)xp8z yfel5doe u 1-9vjd+ h 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 var 49 xglk8jru 1y)fol+m ev-e*hd/zdp5 ious 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. Neither is moving. Which of thec4r9vdqd.i +rok4 pglsi s 8k t7,6u9e following statements concerning t+sld49skir,vgdk i u86 qcte r.o79p4his situation is CORRECT?

  06.15: A crate of toys remains at rest on aq5j 3 6oy5nhwa sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleiga3j6ywo55 qnh h. What force is responsible for the crate’s increase in speedup the hill?