99.36: What happens tmht;j3ft- 6mk,*h glzgx )iy 1o the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one thaml yk9x yq,5t4t does not depend on the quantity of matter presyxkt59q 4ym,l ent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Ex46hkllg.ka; y : b1)7grmvtxarth. Assume the Earth has maya;.gkx6) xrl hltgmv:4k 71bss $5.98 \times 10^{24} \; kg$ 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 ngk330vosrdri -l / 2obear the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass is dlv is3b0o/- r2ogrk3 $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while ixv, pxvzq+( enx qa4ep7 /o2x4ts acceleration decreq+e4e,apo xqvxv7z( p42n/ xxases?

  00.11: A certain particle undergovs)vx d 06u01tct9erhes erratic motion. At every point in its motion, the direction ofu)1hdxrvtt sec69 0v0 the particle’s momentum is ALWAYS

  17.14: A block is sus0 k d,w(rxg 4srm5abvs(4xfu 1iy03r upended 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. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force w,4 fribs r xxk m5 r41guu30va(d0sy(of the string on the block?

  07.18: In which one of the following 0ij7)ohy5,bmmu 9i qusituations is the net force constantly zero on the objectm9 y)uuhb0mi q5j7io ,?

  13.28: An object is in free fall mig -pr7oeqf-/p-8 hpnaw--xp t(n x5close to the ground. A person 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 object as it is/p er- 8px-( x-nh-nqomg-i taw5fpp 7 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 x.+krpndrs( fex -;t .forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. rx-.nd etf(kpx ;rs.+ The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can beh+ jm/ofu4 soo,/+/ goyelh:b combine to form a resultant with a magnitud /fh ++ey/jgso4uom ol/ho:,be of which of the following

  10.06: Which of the fol v4dkl.0+8qov lx0x, fgwe5mzlowing statements is most closely associated with Newton’s T dowfg0lqlex8v 0mv k5xz.,+4hird Law of Motion?

  95.06: The reaction force does n6uayz. -4b6bqxb,sj c*vdj 3eot cancel the action force because:

  14.14: A box rests on the floomlerwx6os ;*jh u;dm5 5czh 0,r of an elevator. The elevator is accelerating upward. Which one of the following choices best represents *xu6 hh zor;sc we5m, lm;j05dthe Newton’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 withw r:,+:sl :2i:)ua u grp zmxlkvm()nh constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydi2p (z:rvhl) muw+rkxs:)ln i :g: uam,ver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed-yqnblf9mbqe+gam/ai. i ,n , mo6.x4 of 35 m/s. The batterswings and hb no l/mfgmx mea,. .-6qni49y,qi+ baits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of wx w. 5uzho.m:q:0gv zthe book is a calculator, also at rest. Whiw:zh gzv5.x q.umo: 0wch 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 exp k +sc a(mfidhm74 .n)2kxj5qjeriment related tk4ik+x mm5 cf) jaq7 d.hns(j2o 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 wh+jof* y c3x,2kya ,zbo90styll s2ir4ile at the same time the mass of2,k j4xr* y f b9ayco302zils +oyt,sl the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 150 o- (itkk j b8lq-i5a0pk;eq/d0 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net ik0 qq5dijl /beatk;- p8(ko- force accelerating the car is:

  99.05: A tractor-trailer truck is travelinc5kcr(6dr.+a h5dr jjg 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 applira5kcj( rc5d. rd6j+h es on the tractor is

  99.16: Which of the following principles best explains why ch+( z v3ps9zxjh 0ia( i/m6owlarge tractor-trailer trucks generally accelerate much m/0m z+a3zh(6i svw coh(xjp9iore slowly that automobiles?

  99.19: A 50 kilogram skater at rest 9;a:rvzhzbk)0(nruqk,d gqo c5+yn 8 on a frictionless rink throws a 2 kilogram ball, giving the ball a velockb(h9ko grz08avyr ) 5qdzcn:+un q,; ity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth wit1y;f(sv 7,fo kpmke xz94v6obh a weight of 100 newtons is acceleratm;o,7(kv1 zoe fb9sxvk 4f6yped at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelfgit9b qa24 xc0mou3:erated from rest by a constant force of 2400 N. What is the speed of th0qbugo94xt:3f2 m icae car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a roubwe*. nk9 ige h;rw1y*gh horizontal floor before coming to rest. The frictionrh**nw1ge ;.9ike bwyal force 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 a rough ho.*+ji u99nk eiwoq0qi rizontal floor before coming w +i *9 9inoukqjqi.e0to rest. The coefficient of friction is:

  09.21: A 20.0 kg box r k2ea,7o/yh4ch1sp bgemains at rest on a horizontal surface while a person pushes directly to the right on the box with ah /agc1obpsey24,hk 7 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 on a hdu .k 5z 843pv7c0(rlvuu jzgaorizontal surface. The block travels a distance of 12.g4 vr.v 8ulj70ud (53czapukz0 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 slides across a patch of ice at a speed v with its brx b:dgu+t7o6g9taw)b-1pe b z akes locked. It then hi t-u9ob)ax1g b wp:z7gdb e+t6ts 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 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 speed v with its brakesb u7fgxtkk7g40o a:t5 log fb t5g0xokt 7u:4ak7cked. 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 emergency stop by slammoql1z2z 2 jt-mxzf,y6ing on the car's brakes and skidding to a stop. How far would the car have skidded if it had bee-2zy ,mlx2jzzo tq16fn traveling twice as fast?

  99.39: The driver of an automobil27fcfl/f ho+ ae must carefully control each of the following devices. Which of these devicesfa+cf 7/ lhfo2 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 y+.vmid7jq *xrocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s ne* dv+iy7mx q.jar the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. n 0:yf+ ushh4dA 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, ru4 :ns+fh d0yhank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks o3e v 1 5u3j :/*vdsnkyx2esuhpf equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevx/ h3 e5jnep1svvd:*s 3u kuy2ation 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 r5w: -)c+6gxmavfl (lx4rjaongth. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks) -axr5rjov6cgfx m(:l4+ wa l 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 frictionleskeqar6*s v+0 xr* gn/dsly along the curved track from point A to point C under the influence of gravity. What would be the directisg 0a+dn x/r*vqk6e r*on of the cart's acceleration at point

  02.40: A box with a mass of 5/(;zt1qufzfo gtn7:eq8tf 5s0 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 requgft q17;zton :ezs8f ufq5(/tired 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 rkq saorpt *j2,i *eg1k9(v+ty est is pushed against a wall by a 100 N force as kk 9e,it+v1a*o2*y p( rstgjqshown. 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 horizontal patch of grass wi8(b)xpoetgn.1k-l jr-a ovv -th a constant speed by applying a force P. The arrows in the diagramg(-. jlbor-1p kvt -vxen8a)o 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 on a table. Neither is moving. Which of the :sv0rp7vbf g.;;j dalfollowing statements conce:va0f;l pv. gd;7r bjsrning this situation is CORRECT?

  06.15: A crate of toys remains at cy8vkd 6 /)0lnbpfew3 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 speedup the hillndkblc/68f 0ye 3vp)w ?