99.36: What happens to the inertia of an object w.l:rq ng;dxxp)4gq *uhen its velocity is doubled?

  02.14: An intrinsic property of + wdbnm;l*m4kz(vxe + matter is one that does not depend on the quantity of matter present. Which of the followingx;* m+en (dmb4kwv l+z properties is NOT an intrinsic property?

  04.16: A 20 kg boulder fqsmi -.+g0 cfrests on the surface of the Earth. Assume the Earth has maf gm.-+0ficsqss $5.98 \times 10^{24} \; kg$ 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 neapgnasv8cv+5xifw yibqw*z1c(1 o 54 2r the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by theic54co8* (2fg ny+5 wixzpvbq1a v w1s sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible /7ly5a(hpajw5fgq:h9 k4r , 7 d joeowfor an object’s velocity to increase while its accelerationf:7 , 7 qaohh (j5ed4kgroaywlwj9 5p/ decreases?

  00.11: A certain particle undergoes erratic motion. At 4 bxsc ukkq833every point in its motion, t ks33k qu48bcxhe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in tnqvvcgpik6 2 6gp1 73che 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. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force 3p2i1q6vv6gk gpc7nc of the string on the block?

  07.18: In which one of the followi3 p mkxjg4;2e2nr3h orng situations is the net force constantly zero oo jkh 242m3ep 3rn;rgxn the object?

  13.28: An object is in free falz:*y da8 hl(ukl close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must bezuk* (:y8da lh 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 hner)16 ,zdc lnevd+6eo2h oa4as three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, actce6l2v)h, enz dd4ro6na1 + oeing on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons +rq8y45k dk0wzl ycc( and a force of 10 newtons can be combine to form a reswrky+c8y l5qk0 4zc(dultant with a magnitude of which of the following

  10.06: Which of the following statements is most clo(jie.k-j2 z7g/vvt-8 g suyhrmh1su:sely associated with Newton’s Third Law of svur/v jhti s-u.e8- h mg1g72z(ykj:Motion?

  95.06: The reaction force does not cancel the pm 7.k,r-c:pjn3wpy h action force because:

  14.14: A box rests on the floor of an elevator. The ed()af(o/:z 04zbubpm v- kbj68 iqqbbhwn,7x levator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acf8q,ka/op dbvj 7zx()bz :(6bw-nh u4 ib bm0qting on the box by the Earth?

  15.15: A skydiver falls downward through tj:yagjfp:wv()t;29 vn0i gahhe air with constant speed. Which one of the following choices correctly desf( wv;nhvyjgaa92pt::g ) 0jicribes 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 k7 a90 *qp pzy)gt9zohm/s. The batterswings and hits the ball.9q*7g0 )o zyppt9z hka The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a t+5d gbe,uv,j*wg kv*c able. 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 , gu v+w*dgbv,kj*5econ the book?

  05.06: The students in a Physics I class were in lab conduc jhr*d8,tke6n.gm c b(ting an experiment related nc .mehr,dg8j*(t b6k to Newton's Second 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 an object were doubled while at the same tiidew/r g7tk, 9me the mass of the object was halved,i,/wet9kd 7rg then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerami2 n8o9zvo ,qted uniformly from rest to a speed of 20 m/s in 10s. The magnitude onmqiv zo,289 of the net force accelerating the car is:

  99.05: A tractor-trail7/rcrkj hqz)a i qll/*b;.(hx er truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on)7hj/l zhi r a;rqk*(cx.bq/ l the tractor is

  99.16: Which of the following principles best explains why large tractfi., + aq9 )csfako w-bti*x-eor-trailer trucks generally accelerate much more s-q t9. kii-w,scx+f*o af) abelowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless roe8vf jdmw.mr .na.m j)ox6*) ink throws a 2 kilogram ball, giving the bj rofd.8)ae mw .n6)mxm*j .voall a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 10q7yexdf;om6e /infxm.fl ,93 0 newtons is accemxeixn, 7o y 9f;eq/f6m 3dfl.lerated 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 constan bw3aibm:lovt f71)cn a p76m)t force of 240m61la3ac)ni7w )tpbom 7 fb: v0 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial spee -luq qwwhd8 26q9 g4tuwxt/r.d 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 beforwxq-8ql u/h6d2w 4uq .9t tgwre coming to rest?

  95.38: A block with initial velocity 4.0 m/s slid r5 e6ux0y)f/koe8t3r 9asagles 8.0 m across a rough horizontal fl0 3y59u)seago/ealk 6trx 8rfoor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while/1t42c0b*mvab7qxo l/xt 9 k hbz(hre a person pushes directly to the ri9z0t/x bhbq h1l ea*o2tv/mx4c 7(rbkght 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 initiallvx - y)zcy1q1oy moving at 8 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 t1z-qy cxv y)o1he surface and the block?

  00.21: A car of mass m slides across a patch of ice at a sja.innb uq) ,ygt9vgf9d5+.speed v with its brakes locked. It then hits dry paveme .u9i5n fqnabgd9s) j,+vt .ygnt 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 slides across a patch of icefqzm(i gp/l it4: /t6bdn11zy 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 between the tires fpt/zid/ n i1qybz: 6(1mlt 4gand 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 apsp dz80scy*;fgq.j*lzb p/z:((f, ,f cmo jon emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice /g qop;szpbd,z*cfj: sz,(mj lp* .of8( yf0c as fast?

  99.39: The driver of an automobile must carefully control each of the folpkq.u m 7g*6vblowing devices. Which of these devices can cause an acceleration in a moving ca7*pubv 6. kqmgr?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on av4tb ::ntv( d.vk hej6 rocket with a weight of 15000 newtons is 24000 newtons. About how m 6dehkj :(n: .vb4ttvvuch 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 aw ,is5hx( kdc6cross a horizontal 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. Given that there is friction f and the box accelerates to the right, rank the si ,x6w(kh5icds zes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster l.35gjx wug)stracks of equal length. Assume that on all tracks the roller coaster cart lx3us )w.5jggs 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 three roller coaster tracks of equal le mgrp atl59.e)ngth. Assume that on all tracks the roller coaster carts start from rest at the same elevation an9ge arlt5.pm)d 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 along the curved tra:+8z)du adwlyt q66po ck from point A to point C under the influence of gravity. What would be the direction of the ca)p o8 z6d6dlu+qywa t:rt's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whifxxf2)q38+bfo)n g (czd-l z kch makes an angle of 300 with the horizontal. Which of the following wouldxd8 )-)q b of3kzlgn2cfz f+x( 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 is pushed againstsgy)- h6ru(ql a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while yqg6s - )rhu(lthe 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 horizontal patch of grass with dxn/y5 e5o*isa coo/ny5ex 5d*is nstant 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 is CORRECT?

  06.14: A book leans against a crate oydw4u68 a d;qs7h*x.ffs kb5f n a table. Neither is moving. Which of the following statements concerning this situation is CORb786;k d4 w* afushyqsfxf.5dRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up mu 5 7z(bgluyv,npnk7z)-my 9iuk-yl;3vn b(a hill with an increasing speed. The crate is not fasten y,7lpy3 nz5yv u blkgk;unb(mn mu-(-vzi)79ed down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?