99.36: What happens to the inertia of an object g0ra9 f zb9g*twf)-)vmoc 3 2w0puotwwhen its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend ok f6th0;m3gdun the quantity of matter present. Which of the following properties is NOT an inkmt f0 h3;gud6trinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume s2f oep8)l zy1- zf 7guwkx0i4the Earth has mas0ge48k-x2lui wf71ozsfpyz )s $5.98 \times 10^{24} \; kg$ 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 t2*bpdi*kwtm f x*r/xc-gdw8** qair +he surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sph8qbc*xrm*d 2 tf*wg /*x*aki+ rwi-pdere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to in0ma f8 3euz1+0yv fbzxcrease while its acceleration d embxu83f +v 00f1azyzecreases?

  00.11: A certain particle undergoes erratic motion. At every point ikrve:cpxan*l 20az12n its motion, the directie: p1lc2av*zrxkn0a2 on of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of alxe98xwpgy8c nd5vn,: h c,( b 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 correccnpy,:gwxnlb8exvh5 (8 d,9ctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the6mdnj,g *l:l j following situations is the net force constantly zero on the object?l ,jl*:ngjm d6

  13.28: An object is in free fall close to the groundx:8a4wzr+5ko1k sm .zlix.bh . 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 being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity isxoh.1l+:z.i mbz4kk5a wsrx 8 g.

  98.03: An object in equilib9 ok z)6uu9r/fa/f xumrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acti6u)mzxu9 /f f9uo/ arkng on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons an2ts91pz8m+g dt qotsvzb ,3k 0d a force of 10 newtons can be combine to form a resultant with a magnitude of which of the ,ktp9t1q2+vszgo0s3dmz tb8 following

  10.06: Which of the following statements is most closelyu1 vw+:u(s ti dd6)wqi associated with Newton’s Third Law o)d+(dtqisw1:v uiwu6 f Motion?

  95.06: The reaction force doesnxk arv0-u .pekke68u 27vbl ) not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator 2ed cuj1n5rv2is accelerating upward. Which one of the following choices best represents cervd1jn2 2u5 the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver fal9*hsgyf t,ms- f 25edn54omrils downward through the air with constant speed. Which one*n-2 esimhf dr,m95yt ofs5 4g of the 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 pitcher with a speed of 35 mog8ayicsz8r bg j(y5 j;p1h6 //s. The batterswings and hits the ball. The magnitude of the force that the( 1shg 5bzj6ai;88 ycg/proyj ball exerts on the bat is always

  11.13: A physics book sits at rest on a ;a eg )kgkb2:yf+k /ss1mhp,xtable. On top of the book is a calculator, also at rest. Which one of the following choices i :kkmg;x1 eb) 2p/h,sskfya+gs 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 exper)p ept2ujns9ky,z2 w8 iment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the2t nu)e js8 p2k,wz9py students make?

  99.03: If the net force (dbqj5qz ex ,kt //wp x)bd.j3on an object were doubled while at the same time the mass of the object was hqqzx (d)pbtx/w/ jb d,jek.35alved,then the acceleration of the object is

  96.15: A car whose maqn6oqf h 7y07xss is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s ioynxq fh 7q760n 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer tr1bqrxd 7l7ti c 1wkt5,bh +4ouuck is traveling down the road. The mass of the trailer is 4 times the mass of the tkw45 b1tql7 tu +1cixh ,7rodbractor. 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 large tracto: *1litmmu 7jar-trailer trucks generally accelerate much more slowly th1m mitj:l 7u*aat automobiles?

  99.19: A 50 kilogramwkw)iws52i;d/ry ,xm skater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motio5 iwyxmdw kwi/,r2; )sn?

  00.13: An object near the surface of the earth with a weight of 100 ih )jigf7q sny94 4uo0newtons is accelerat)4749 hfi snoigy 0uqjed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is xlrk8 iui98m o1*g/xr9ew da 71200 kg is accelerated from rest by a constant force of 2400 Nr l1k8x 9aud wer7ix gmi*o8/9. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initig /vjr7- 49bhqjeyxk.al speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictionaljver.q/ky 7- 4gjh9bx 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 roug 0zti0-s49 xq) sjqwaph horizontal floor befor-4qsij ) w9s a0zp0qtxe coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizont0ry4bzs+ r+ ccal surface while a person pushes directly to the right on the boxbs+zr+ y4ccr0 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 uni1ta(aed.58ibcmvdn j9h.f5k formly to rest on a horizontal surface. The block travels a fck8 e .tdjm1b.d5(a5ai hvn 9distance 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 block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its br-z9a5/ c/pn b4v rzdvkakes locked. It then hits dry pavementr / znc49/vpak-zvd5b 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 bgtsyqq8ty148r v54 okrakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frict ykqg48trsyt4 q o8v51ion 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 tt2vvs7d gj); makes 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 twice as fas2vsd g7 v)tjt;t?

  99.39: The driver of an automobile must carefully control each of the followvp m(mefc73 zox-*yc 6ing devices. Which of these devices can cz x( mf*7-cecy om63vpause 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 weno qd9oi/p9a-zzur55ight 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 nearnop r99z- /ua5 oidzq5 the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal.)(c kcz s(5p hv/ntoq 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 sizes of these three forccz)v(.5p ctnqh (k /soes exerted on the box.

  02.27: The diagram below shows three roller coas7om24ovztz; irm7 wc0ter tracks of equal length. Assume that on all tra0m7z;vmo2crwt 4z 7iocks the roller coaster carts 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 rq7gwm jjq4kv 1c ug;m; d+7b5j- aa2ywoller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from 7 a2jcm 7dqgj;- kma1+gu by;w5jwqv 4rest 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 along the cfwv-pg(-b bgg2g;y k dg3l3;iurved track from point A to point C under the influence of gravity. What wv(3gfg iwy3db-pgk- 2;lbg g;ould be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whi:102dvd;p ci rnl n, kff3b/iych 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 mocy rf/i02n,1: vpb3f ikln d;dve 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 against a wall by a 100 N s7wg7)ptlf fp -78g(rwtb+ cxforce 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 block aftb7xwc +s-ftw 7(gp7fg )8tplr er a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass wis(c ev7z1,jg2yf mb6je(;qjsacpi2 8,xlgx4 th a constant speed by applying a force P. The arrows in the diagram correctly in2ieglzj q jjac,f72(mes481xxv6y;b(gs, p cdicate 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. Neithabxybzlk s1zp006 5 ,per is moving. Which of the following statements pp 50zakbysb,xz6 l 01concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is7vd)s+c*c+xxuy)(c u.xymu y pulled up a hill with an increasing speed. The c yuv(x u ycc+yx)xd).m*7 s+ucrate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?