99.36: What happens v( yu/vm dw ,yh78ye1yto the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property oh:t*:pseh az-qg 0cn3 f matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic propnh:ct0q*g pe-3zh : saerty?

  04.16: A 20 kg boulder rests on the surface of the Eart3, s+ s(oy egs ysolyg.x/)c8n.atv3wh. Assume the Earth has ms3. (ot8xvy ga ,slgs/ nywc.s) oe+y3ass $5.98 \times 10^{24} \; kg$ 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 jg( ja. (v,jb5i; frhoof the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The jb5jgv(,a i.f rj; oh(Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object. s shnnst,854q l 3pta;wkoua.+d0by ’s velocity to increase while its acceleration decreas sa403; ..,upstq sn5klot+byw8d ahnes?

  00.11: A certain particle uiq+emjgadj s4jca0), c-s 3dfjy-/z 2ndergoes erratic motion. At every point in its motion, the direction of the particle’s momentum is ALWjzajs - -yj jd)3mg2qe/ 4cdc af,+0isAYS

  17.14: A block is suspended in the air at the end of a stringx(p7 ij. w toyv6l8 le9j1ycrs ,1mb* wm/b1yk held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. Duringsj.l 19v o/m*twpwl1 y cyr1,k8(ei y7b6jbxm 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 the net force constantly zchfcy300tc:s,pdd9 g ero on the fd dg c39yc,h00 ctp:sobject?

  13.28: An object is in free fall close to the ground. A person intajh+ ksj36ixt(4mc 1hk(+ cle ervenes and slows the object uniformly to rest. Which one of the following statementsk614 ej( h s j+ccl+ix3ka(htm 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 for)bry l up574 :i, k98klxxkgt2zzvdn *ces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1lv zy p ,l24x8 7krxiu)kk:zd5n9b*gt and F2 is

  01.07: A force of 6 Newtons and 0l(6 v/xigldd jkgwsv;j13w9a force of 10 newtons can be combine to form a resultant wsg ;1wdjl wvjik9/vg6d(0lx3ith a magnitude of which of the following

  10.06: Which of the following statements is most closely ass2 *qs(+j xuvv,v 8ho i(0pdogfociated with Newton’s Third Law of Motiono *v g(2 q8x vvo(p0ijdu+f,sh?

  95.06: The reaction force does not canm)a 9wovdj19 scel the action force because:

  14.14: A box rests on the floor of an elevt)ma*fu tvq 1vfd skyp 0-,a5,ator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the grupm, vt-tv0d )aysq*k,15af favitational force acting on the box by the Earth?

  15.15: A skydiver falls downward thry 2:wqjkctwm+dks2 9kcs)3 sx/3 2pg-k. z jueough the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair forpw2key jsks:39k jsq t32u.kd+)2xm wz /g-ccce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcn h9vzo8;t(siowml+qy9s9ja ;7i w d-her with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts yz9a-qn i8 i(;wsjw o9+7lh vo;9stmdon the bat is always

  11.13: A physics book sits at rest on a table.7v0a obs/x -9e(bcka s On top of the book is a calculator,soab bxeksc/0 ( a-97v 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 book?

  05.06: The students in a Physics I class were in lab conducting an experiment ren2p6*:c3skkets 66flem6gi z zo y: ,blated to Newton's Second Law. The collected data were displayed on the graph at the right. From y,::zcs ges6o3b 2 mtknp f6ki 6zel*6this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the sameq1/9ho rw+ubb time the mass of the object w /qh9bb +1wruoas halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 7 3sr*o;.un8rfqvir t kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the 7vn* t8q.iurf; sro 3rnet force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the roadzbwcty+3(vs1 :dw zi4 . The mass of the trailer zszv b3y( w:t1ciw d+4is 4 times 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 laj0.n s:b7q6 7 nbwr;dphp9x iqrge tractor-trailer trucks generally accelerate much moxqbd;n . hr97pjpbqws06:i n7 re slowly that automobiles?

  99.19: A 50 kilogram snt59x zq,/ j.3t-( kjqygbvqukater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10(vt9/.,tk3b5unqj -gqx yjq z.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 1a41foeqy:j fz xlsv4l8z10m :00 newtons is acceleratemqf1 l4x0fs:e y4l8 joavz1: zd 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 constant fow,or v(o-a2qz* ap/xdrce of 2ra/*z-xoa q opd 2(v,w400 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/sxe2f dr gvh150ntjgjpqqh /s1 h/+(q6 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 p/n5f11+j e 2qhhg(vdj6qh tgq/xr0sbefore coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough hor*yi*mcopj+, pc sg6n 5sz0 2amizontal floor before coming to rest.p cnz,m**jmsc si 2+op 650ayg The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person -jkt kyf i9 gf5kt hgz(25p3e4pushes directly to9 geff k52 k-g pzt(yi3t5jk4h 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 res dh1(-h,/c7 4w-r jt 0kjsfoo(pyg zhdt 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 surfacfws-p,1rkc4 dhod(j zg-0yth 7ho /j(e and the block?

  00.21: A car of mass m y a u2)jnach w:lf 43n bq -9fmpaoj45xdk044pslides 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 between thef qp-cnub0: 4mw4afna539jh 4lpy 4jak2)dxo 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 at a s0/nkajv)h :4mlvc(fitcy 2sw(v:ks 5 peed v with its brakes locked. It then hits dry pavement and skids to 5(s j :wmk4)ylh(cans cv2 :i/vvf0tk 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 mav( yp g/*yghz*kes an 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 t zpg** y(g/yhvwice as fast?

  99.39: The driver of an automobile must carefully cl1m+xlansq nlvi 7u44*5;werontrol each of the following devices. Which of these demrxn ll nev+ 1s45;qil4w7a*u vices 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 newtons is 24000 newtong ))q rvi8 .z7j;hxycvs. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the survxi )7 8vqy jzrc;.g)hface of the Earth at takeoff?

  07.21: A box slides to the right across s mh/ fj+054-hh jvhzba horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts+zfh/0hhj bhm sj4v5- 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 sizes of these three forces exerted on the box.

  02.27: The diagram below shows three r 4eomoq, y6j:soxvp;el9 6o3 woller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation aye 9oq3oo xol,v;:m jws 46p6end 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 c4/tkhm ctm.l 4oaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation at 4th4mc./lm knd 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 isw rm1;rf:u eq6qa2/3u mx)malong the curved track fruiam /s;xf)63m we:1u2 rrmq qom 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 mas3qigzno 3s)h) s of 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 oqis )3nzh 3)gof 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 res;o2vgr6 zw4s / zxnhl1t is pushed against a wall by a 100 N force as 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 bloz2 /wh1gs6lv4rxon ;zck after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grw5rsja:r /+dn ass 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 is CORRECTnrwd+s:j/a5 r?

  06.14: A book leans against a crate on a table. -vubgm t9-q76z5uhs0, h 8hcbw6 juhi Neither is moving. Which of the following statements conc6b0,j7 hi 69- tmz- qguhvh8bhwu5uscerning this situation is CORRECT?

  06.15: A crate of toys 8 /:tyu9nrdg sremains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not faste :gn8stryd u9/ned down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?