99.36: What happens 1eih1 pzix4)oi9d1flto the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on 3oum/olb+8vx v39qb vd7ocg4 the quantity of matter present. Which of the following properties is NOT an intrins9o78odg4bv+lm xv/vc33 quobic property?

  04.16: A 20 kg boulder rests on the surfac*oc2bgj f3e zgha4xfe. -+nx9e of the Earth. Assume the Earth has mass fe24*jh gon9 gf+zaxbx-3 ec. $5.98 \times 10^{24} \; kg$ 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 ofxsfq; l6a*q 7 vz,c,7rscjqi9 the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass f r,xji s7 c9zs;6*ac7l q,qqvis $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s veloci(lp w uqx/k2/e-txk) sty to increase while its acceleration decrease pwk)qx2t( /x-lusk/es?

  00.11: A certain particle undergoes erratic moe32q7wt xd5 fotion. At every point in its motion, the direction of the particle5wtod7e3f x2q’s momentum is ALWAYS

  17.14: A block is suspended ia+uh4r), 97ig;k dsov(ekdsrhy ki;3n 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 th)y; edrh k(o,ih 493gas+7ksir;vd kue force of the string on the block?

  07.18: In which one of the following situatiooj 7zk3 9el*a. gme9fk xf1k0vns is the net force constantly zero on the obk9xma *le 30jkkz7 1gov9 ef.fject?

  13.28: An object is in free fall close to the ground. A person i7)cpt;vlxck ) +sz6pfntervenes and slows the object uniformly to rest. Which one of the following statex+) s6cpcv)t;7 kzfplments 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 2eiu+/ffhq4bk.+ vz ;*ucdrrN, and F3 of 70 N, acting on it. The magnitude of the *k2 fevz+4f;q.hur/d+ cr iubresultant ofF1 and F2 is

  01.07: A force of 6 Newton.+sfqi;1tb/ 5 c zi/vd kom9qks and a force of 10 newtons can be combine to form a resultant with a magnitude of which of thec;bd fvt.59 i//zk1 qoms qki+ following

  10.06: Which of the followingu /juxxx;y;8 ys-:y ah statements is most closely associated with Newton’s Third Law ofj:yuyy s;x- /u h;8xax Motion?

  95.06: The reaction force does not cancel the action forcq6scs(gn 6z +zjvy6oc c1i9+e e because:

  14.14: A box rests on the floor of an elevator. The elevator is a3d ekaggsn9)n+d7iht7f p;6dccelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitgne 3p)6 9id+7fnah; gks7dtdational force acting on the box by the Earth?

  15.15: A skydiver falls downward tmu83p7 ffn:r shrough the air with constant speed. Which one of the following choices correctly describes the Newton’s rmsf3 :fnp87u Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by am mw2n2 /a) g 2gmne+rkbhi,)n pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitub2n,2n gk /i m2)a+h gmrwme)nde 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 the book /ez jx--o pzv /+hxm wo;62nxois a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to tn6;--o hpzwmz2+/ex xo xojv/he force that the table exerts on the book?

  05.06: The students in a Physics I class were inj:fnx3w swvf*11l f:b lab conducting an experiment related to Newton's Second Law. The collected data were displayed vffjw:3:sw l*1 1bfnxon 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 swu imi 3s.9lz 80ptjho 0ff;i*a.a+ug ame time the mass of the wi aug0+30pio.fai l ;8z j9hfusm.t* object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a spqqicbm+ve +y( s16 y7need beqv+cy+1 s7y(n miq6of 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trk+-;a* +m, xq zmgey*vkc:wukailer:+ u -,ew; m zq+*vkyxmc*kakg is 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 following3c (ssk:p7+uu v6ymkh( ku2tv principles best explains why large tractor-trailer trucks generally accelerate much more slowly uvcu u:(k2(p7ktvm h6 +k ys3sthat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink,j3ye93g 8bkzak/d-p ggo *3y5 filit throws a 2 kilogram ball, giving the ball a l-9j ig358 oy/ypb, g3kg*e df3zatikvelocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth w1udh w2vya p zl3+7nt7+mgc,fith a weight of 100 newtons is accelerapwn gc+zdam7 u2f l7 +1y3vh,tted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg+ 5lfzg zk;kdm8bjb f2sc5j7r +7u8r x is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnin7+8l2bk uzb875scgjrx;r jkm5d f+ fz g?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across l- rmlfri0,hope1(;z 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;-rfhz l( l,ipme0ro 1e coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acy(:usq jgzfe*i7 dk):ross a rough horizontal j*d k :sg:uiy7e ()zqffloor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest : 1fzw2y)nm zxlxz.br:d;zi: on a horizontal surface while a person pushes directly to the right onmdx :xizfwry ;.z:2 ):lznz1b 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 rest on qi*5:(:s py k ttx*t8sunog ney(6k3ga horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices bestn: i6:(x* t83 5npok*u(sgsk yegytq t 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 sluy y3jn12es)peed 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 tiresesl u31 )jnyy2 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 acrjbbm 5y8 3q7w*ijxj*irv-8 lds c7lh/oss a patch of ice at a speed v with its brakes locked. It then hitsq* /j5vy w8lr*-xm di 7ljjcb3s7h8bi 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 slamming on the car's2zpbyiu s;4e(1ridra ydt0e* 5r804la5z cb s brakes and skidding to a stop. How far would the car hastrir pabr0c*u 1d04e5(b sz;ayzl y54i8 e2 dve skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of 66d a;ms9hm8o0lyr w xthe following devices. Which of these devices can cause 6smw d9hlyro 680m ax;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 8gn v1lwwv74my-c6nml 5tl4x newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at 8 54yvmlx-64n wwgn1v l tmlc7takeoff?

  07.21: A box slides , +d)bhf,pm* qkccb /cto the right across a horizontal floor. A person called Ted exerts a force T to the right on the box. A pbcmkqc +h*fc ) ,,/dbperson 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 forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equ/8o3p ivob.ptal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslp 8ib.3poov/ ty 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 leng5h f1p4 7/i(5a:dm4ak6u vatvd kcvvvth. Assume that on all tracks the rollerdva5v5/ k:4v76t vc4kump afd( 1ahvi 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 reach the finish first?

  02.29: Assume the rollercoaster cartk*u kju*/ r8ffdtc cd-irp,4 :rolls frictionlessly along the curved track from ppc*dr f/d84 ckt r-*jkufi:u ,oint 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 mass of 50 kg is dragged across the floor by a rope whic got+gz+m)y iaxe;qww l7(+ -sh makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinet;+(-xmlw)iyw7 goqgs+taz +e ic 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 against a wall by a 100.wwl x6 ts;dp2 N force as t p.; dwxslw26shown. 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 push .+il4wyc2 rpjes a lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not nec +2w4r.pcy ijlessarily 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. Neitw i35r utvpu l9xmq+:(her is moving. Which of the following statem9x(53i+ umr wqu pvl:tents concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleiga9o v v8eaji:2mc;v*b+jq n)yh is pulled up a hill w y* +)no vab9civ2e: v8m;qajjith an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?